My ex wife had the most powerful orgasms by laying in the tub and having warm water run on her clit and pussy. She said she masturbated this way since she was young. It was very hot for me to watch her masturbate this way. She had very powerful orgasms from it.
I was there last year, it's a really amazing place. When you're at the top, you really can see the horizon (see forever). Be warned though, lots of steep walking to get to the top.
You can stay there overnight if you wish, there is a hotel there. If you go, get a tour as there's a lot of information about it and it's very interesting.