Hyena's aren't the cleanest of the animals that can be found in Africa. The Hyena Pack reside in the Graveyard. They have rotting carcasses laying about as well as hundreds of bones.

Shrub Valley is what it implies. It's a valley that was once, long ago a river. It's filled with tall green grass and tons of shrubs. Some pretty and harmless, others with sharp thorns and poisonous flowers.  

Though Hyena's prefer to steal their meals and scavenge for them there are times when they must get out and actually hunt. This is where they hunt. They must keep a look out for lone lions and lioness as well as African Wild Dogs for safe measures.