Can you get down deeper into the cave which is near the small hut where stamin up is?
There is a fence hindering you from getting down but the fence looks like the others that you can open with a button for 2500
Is there a way to get down or is it just the end of the map?

And one more question?
how can you use the elevator?
as soon as i go there i fall off after like 1 second?!