What, didn't you saw this
If a player wants he can take a break and when returning he continues from the level where he was before the break. Perhaps you have seen this:
These rules are subject to change at any time. 
But seriously speaking I think it's fair that player can take a break and after that continue playing without starting from the bottom. Thus Primitive doesn't have to start from the bottom again.
I changed the Hill names again. It's truly confusing that the bottom of the hill isn't the lowest level. Now it is. I added the crest of the hill before the top. If I recall right it was Slynky who proposed that so thanks to him.
And those names aren't nailed down so if someone has a better name ideas post it here.