• Gladden Pass: Beside the fact that it exists, no information is given here. The idea shall be to make it take a route that seems feasible and logical, but also is interesting and comes along some nice terrain features. The road should be rather simplistic (so as few bridges and similar as possible), and it can partly be very exposed and/or steep.
  
• High Moors of Rivendell: Between the Bruinen Ford and Rivendell the path leads through treacherous high moors. In that area will be placed a larger flat area which in some parts may be very wet (even small lakes). Further southwards terrain gets again drier so that a nice transition to the already finished terrain is possible. In this area many small paths will be added, similar to northern Ithilien. Maybe we'll also add another Hollin town. Be sure to check the book description below which is in parts very detailed. (Mainly the Hobbit.)
  
  Spoiler: Concept pics

  
  
  
• Rivendell access / roads: From the western side again the white stones will be marking the path. Rivendell will lose the road out from the backside and a (temporary) alternative route to connect the High Pass will be built.
  The Fords of Bruinen will be changed too according to the map: The hill to its south shall be lowered / flattened, the road from the Bruinen Ford towards the High Pass and Eregion will be mostly parallel to the Bruinen. As pointed out by @Eriol_Eandur the Northern Ford side should be changed too to match the book descriptions.
  To everyone who already worked on terrain around Rivendell: I'm sorry, but I most likely have to change it again to make the terrain fit in layout and style to the rest of the mountains.
• Hollin Ridge: The current Hollin Ridge is too far south; All of Hollin should be south to it. This will mean that the course of the river Bruinen will be changed, however the size of the Angle should not be decreased to much for potential MERP additions there.
  Emilio has already completed most of the tasks connected to it beside adding the new Hollin Ridge.
• Gladden Fields: As the other swamps this would just include coming up with a style concept and then mostly jobs. Further north is a construction site where long ago BrotherAlex assumingly worked on the Gladden Fields; his start was too far North though, thus these changes there should be revoked.

J.R.R. Tolkien: The Hobbit - Chapter 3: A Short Rest said:

That sounded nice and comforting, but they had not got there yet, and it was not so easy as it sounds to find the Last Homely House west of the Mountains. There seemed to be no trees and no valleys and no hills to break the ground in front of them, only one vast slope going slowly up and up to meet the feet of the nearest mountain, a wide land the colour of heather and crumbling rock, with patches and slashes of grass-green and moss-green showing where water might be.

Morning passed, afternoon came; but in all the silent waste there was no sign of any dwelling. They were growing anxious, for they now saw that the house might be hidden almost anywhere between them and the mountains. They came on unexpected valleys, narrow with deep sides, that opened suddenly at their feet, and they looked down surprised to see trees below them and running water at the bottom. There were gullies that they could almost leap over; but very deep with waterfalls in them. There were dark ravines that one could neither jump nor climb into. There were bogs, some of them green pleasant places to look at with flowers growing bright and tall; but a pony that walked there with a pack on its back would never have come out again.

It was indeed a much wider land from the ford to the mountains than ever you would have guessed. Bilbo was astonished. The only path was marked with white stones some of which were small, and others were half covered with moss or heather. Altogether it was a very slow business following the track, even guided by Gandalf, who seemed to know his way about pretty well.

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The Lord of the Rings - Book II - Chapter 3: The Ring goes south said:

Many had gone east and south; and some of these had crossed the Mountains and entered Mirkwood, while others had climbed the pass at the source of the Gladden River, and had come down into Wilderland and over the Gladden Fields and so at length had reached the old home of Radagast at Rhosgobel.

[...]

They crossed the bridge and wound slowly up the long steep paths that led out of the cloven vale of Rivendell; and they came at length to the high moor where the wind hissed through the heather. Then with one glance at the Last Homely House twinkling below them they strode away far into the night. At the Ford of Bruinen they left the Road and turning southwards went on by narrow paths among the folded lands. Their purpose was to hold this course west of the Mountains for many miles and days. The country was much rougher and more barren than in the green vale of the Great River in Wilderland on the other side of the range, and their going would be slow; but they hoped in this way to escape the notice of unfriendly eyes. The spies of Sauron had hitherto seldom been seen in this empty country, and the paths were little known except to the people of Rivendell. Gandalf walked in front, and with him went Aragorn, who knew this land even in the dark. The others were in file behind, and Legolas whose eyes were keen was the rearguard. The first part of their journey was hard and dreary, and Frodo remembered little of it, save the wind. For many sunless days an icy blast came from the Mountains in the east, and no garment seemed able to keep out its searching fingers. Though the Company was well clad, they seldom felt warm, either moving or at rest. They slept uneasily during the middle of the day, in some hollow of the land, or hidden under the tangled thornbushes that grew in thickets in many places. In the late afternoon they were roused by the watch, and took their chief meal: cold and cheerless as a rule, for they could seldom risk the lighting of a fire. In the evening they went on again, always as nearly southward as they could find a way. At first it seemed to the hobbits that although they walked and stumbled until they were weary, they were creeping forward like snails, and getting nowhere. Each day the land looked much the same as it had the day before. Yet steadily the mountains were drawing nearer. South of Rivendell they rose ever higher, and bent westwards; and about the feet of the main range there was tumbled an ever wider land of bleak hills, and deep valleys filled with turbulent waters. Paths were few and winding, and led them often only to the edge of some sheer fall, or down into treacherous swamps. They had been a fortnight on the way when the weather changed. The wind suddenly fell and then veered round to the south. The swiftflowing clouds lifted and melted away, and the sun came out, pale and bright. There came a cold clear dawn at the end of a long stumbling night-march. The travellers reached a low ridge crowned with ancient holly-trees whose grey-green trunks seemed to have been built out of the very stone of the hills. Their dark leaves shone and their berries glowed red in the light of the rising sun. Away in the south Frodo could see the dim shapes of lofty mountains that seemed now to stand across the path that the Company was taking. At the left of this high range rose three peaks; the tallest and nearest stood up like a tooth tipped with snow; its great, bare, northern precipice was still largely in the shadow, but where the sunlight slanted upon it, it glowed red. Gandalf stood at Frodo's side and looked out under his hand. 'We have done well,' he said. 'We have reached the borders of the country that Men call Hollin; many Elves lived here in happier days, when Eregion was its name. Five-andforty leagues as the crow flies we have come, though many long miles further our feet have walked. The land and the weather will be milder now, but perhaps all the more dangerous.'

[...]

Guided by Aragorn they struck a good path. It looked to Frodo like the remains of an ancient road, that had once been broad and well planned, from Hollin to the mountain-pass. The Moon, now at the full, rose over the mountains, and cast a pale light in which the shadows of stones were black. Many of them looked to have been worked by hands, though now they lay tumbled and ruinous in a bleak, barren land.

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The Lord of the Rings - Book II - Chapter 4: A Journey in the Dark (for warg hill) said:

For their defence in the night the Company climbed to the top of the small hill under which they had been sheltering. it was crowned with a knot of old and twisted trees, about which lay a broken circle of boulder stones. In the midst of this they lit a fire, for there was no hope that darkness and silence would keep their trail from discovery by the hunting packs.

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1. Convert sand to stone
2. Glaciers (job)
3. Snow
4. Grass (blocks)
5. Gravel
6. Biomes
7. Rivers
8. Grey Stone
9. Boulders
10. Trees
11. Grass + Flowers
12. Bushes (job)

• Glaciers
• River sources
• Bushes
• Moor jobs (similar to swamps/marshes)

http://goo.gl/Jy3Q3s

1. [JOB] Make wide rivers deeper. All rivers are already 1 block deep and will remain fairly shallow.
   Depths depending on width:
   - 1-7 wide: 1 block deep (no changes needed).
   - 8-11 wide: 2 blocks deep (dig one block deeper, along the islands there should be 2-3 block wide strips with depth 1).
   - 12-17 wide: 3 blocks deep (dig two blocks deeper).
   - Above 17 wide: 4 blocks deep (only appears near Anduin).
   
   
2. [VOXEL] Add materials to the rivers:
   - /b sover mm
   - /b sover d1
   - /vr 3 (Dirt)
   - /v 13 (Gravel)
   - /v 82 (Clay ~ Brighter Dirt)
   
   - /b sover s300
   - /v 172 (Hardened Clay ~ Brown Stone)
   - /v 173 (Coal Block ~ Reddish Stone)
   
   - /b sover cm
   - /v 98 + /vi 3 (Chiseled Stonebricks ~ Mossy Stone)
   
   
3. [VOXEL] Add water (/b fd, /v 87 --> /b b mm, /vr 87, /v 9).

1. [STAFF] Pick 1 to 4 islands for one job (depending on size).
   
   
2. [STAFF] If Island is wider than about 12 blocks, make it higher. Count 5 blocks from the shore (resp. 3-4 blocks diagonally) until one more layer is added. There's two variants how to make this:
   1: Mark out the outline of the additional layer entirely (no gaps) and use //fill 1 50 when standing inside it.
   2: Place a few discs (/b d m, /v 1) and adjust them to desired shape with /b bd.
   
   If again 2nd layer is at least 12 blocks wide add one more layer similar to first one.
   
   
3. [VOXEL] Convert stone to grass (/b over mm, /b over d1, /vr 1, /v 2).
   
   
4. [VOXEL] Add swamp biome:
   /b biome swampland
   /b 3
   
   Drag this brush right along the shoreline of the island.
   
   If neighbouring islands are already done make sure the entire river has swamp biome too.
   
   
5. [VOXEL] Add materials:
   
   Add some gravel on the outermost 5 blocks (lowest layer only on bigger islands):
   /b sover mm
   /b sover d1
   /b sover s300
   /b 5
   /v 13
   
   Add dirt in the same area:
   /v 3
   
   Add more dirt on entire island. (Bigger brush size according to island size)

1. [JOB] Make shore jagged by digging 1-3 long streams into island. Fill up streams with netherrack.
   
   
2. [VOXEL] Replace netherrack with water (/b b mm, /vr 87, /v 9).
   Then replace the stone that was below the netherrack with dirt (/b over mm, /b over d1, /vr 1, /v 3)
   
   
3. [JOB] Add some more blocks in an area two blocks around the shore of the island. The blocks can be completely surrounded by water or touch the island. Use grass, dirt and gravel for this.
   
   
4. [JOB] The first part of the island that will be vegetated is all that is being affected by the swamp biome, this means up 3-4 blocks away from the shore.
   
5. [JOB] Plant reeds (ingame name: Lilac, ID 175:1) in the area mentioned.
   
   
6. [JOB] Place some (single) Podzol blocks in that area.
   (Explanation: This Podzol will be converted to Dead Bushes which can only be planted onto sand).
   
   
7. [VOXEL] Replace the Podzol with Dead Bushes (/b b cc, /vr 3, /vir 2, /v 32, /vi 0).
   
   
8. [JOB] Place some more Podzol blocks. Then place Double Tall Grass (175:2) ontop of ALL Podzol blocks. Additionally plant more Double Grass on all unoccupied blocks in the area mentioned above.
   (Explanation: The Podzol will be converted into lower halfs of Double Grass, which yields triple or quadruple tall grass.)
   
   
9. [VOXEL] Convert the Podzol to Lower halfs of Double Tall Grass (/b b cc, /vr 3, /vir 2, /v 175, /vi 2).
   Note: Small islands may be done at this point.
   
   
10. [JOB] In the next 5-6 block thick area, resp. on very big islands with 3 layers on the entire second layer, place a lot of Podzol blocks. Only few blocks should be left uncovered, up to 3 Podzol blocks can be stacked ontop of each other.
    
    
11. [JOB] Place yellow flowers on about 50% of all the Podzol. No flowers onto the ground.
    
    
12. [JOB] Place Double Grass on ALL remaining Podzol blocks and on ALL remaining blocks in between.
    Note: Medium islands may be full by now, in that case continue with step 15.
    
    
13. [JOB] Place more Podzol in the remaining center of the island, but with decreasing density. Many blocks should be left uncovered.
    
    
14. [JOB] Place again flowers on 50% of the Podzol blocks and then Double Grass on ALL remaining Podzol blocks. But then only place a few more Double Grass on the remaining blocks in between.
    
    
15. [VOXEL] Replace all Podzol with lower halfs of Double Grass (/b b cc, /vr 3, /vir 2, /v 175, /vi 2).
    
    
16. [VOXEL] Place regular grass on all remaining blocks (big islands only) (/b over cm, /b over d1, /vr 0, /v 31, /vi 1, use gunpowder).

1. [JOB] Dig the main streams along the blue wool lines (yellow wool is section border). Normal wool lines represents 2-3 wide and 1-2 deep streams, wool lines with always two blue wool lines stacked upon each other are bigger streams, 4-5 wide and 2 deep.
   
   
2. [JOB] Add small streams as following:
   - Width 0-1, this means the streams can be only connected over the corner of a block (cf. images above).
   - Do not make isolated puddles, connect everything at least via a block corner to the rest.
   - Vary the stream density, that means there should be clearly wetter (more streams) and drier (less streams) areas.
   
   
3. [STAFF] Voxel the following:
   Stream materials:
   - /b sover mm, with default settings (/b sover d1!)
   - /vr 1 (so that only rivers get affected)
   - materials: dirt (ID 3), gravel (ID 13), coal block (ID 173), hardened clay (ID 172)
   
   Ground materials:
   - /b sover mm
   - /vr 2 (only replacing grass)
   - /b sover s100
   - with that brush add a few blocks of: stone (ID 1), coal block (ID 173), hardened clay (ID 172)
   - /b sover s500
   - with that brush add some: dirt (ID 3), gravel (ID 13), most blocks should still be grass after that.
   
   
4. [STAFF] Add water. (/b fd, /v 87 to place netherrack, then /b b mm, /vr 87, /v 9)
   EDIT: Leave the water as netherrack until the end to avoid players placing plants in water accidentally.
5. [JOB] Make the bigger islands a bit higher by adding some grass blocks. Make sure no grass blocks ontop of grass blocks are visible (replace lower grass block with dirt or stone).
   
   
6. [JOB] Add some rocks (consisting of stone, mossy stone, coal block and hardened clay), aswell as some bushes (birch leaves). Make sure no stone ontop of grass block is visible (replace the grass with stone). Bushes can grow over small streams.
   
   
7. [JOB] Add A LOT of heather (allium) and long grass, and add A FEW flowers (red tulip, pink tulip, poppy).
   - Job over -
   
   
8. [STAFF] Voxel the following:
   Dead Bush:
   - /b sover mm, with default settings (/b sover d1) Use gunpowder!
   - /vr 0
   - /v 32
   
   Fern:
   - /b sover cm
   - /v 31
   - /vi 2
   
   Grass:
   - /b over cm
   - /vi 1
9. [STAFF] Swamp biome:
   - /b biome SWAMPLAND
   - /b 2
   Use that brush to splatter around a few spots with swamp biome (cf. images)

Bombur8 said:

Why is there a path under the white rocks leading to Rivendell? And why is there a Rivendell sign on the last cross-road ? Isn't Rivendell a hidden valley?

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