Today we introduce a mod that encourage exploration of the world of Minecraft, adding new biomes and modifications thereof.
Highlands 1.7.2 and 1.7.10 is a mod which adds many more mountains and hills than usual. Also modifications or sub-biomes representing small areas within the same biome. Such as valleys, islands, small lakes, etc..

Detail and Download here : Highlands Mod

Homepage: Mods for Minecraft