this map is a huge jungle biome on mountains with water, there are also more biomes but the jungle biome is the main biome in this map. there are lots of caves and dangerous dark places. try to survive it :)

if you want to create/generate a map like this you can make use of this mod go check out this link:

http://www.minecraftforum.net/topic/1077039-125-wedge-the-worldgen-editor-create-worlds-youve-only-dreamed-of-256y-mp/

survival goals:

• build a house on a platform
  
• build a mobtrap
  
• build a weat farm
  
• find more biomes
  
• have fun :)
  

Additional Notes