to test your guts, you can do one of them is rafting, in Bali there are some very beautiful river scenery on either side, and of course the flow of a rushing river, very good to test your guts, to do adventurous river. and you could do with some of your friends, of course you will be guided by rafting instructor, who already understand the location of these rivers. you can enjoy the beautiful, and rapid flow, the river Ayung, Telaga Waja River
Rafting
Here, to test your guts,
Rafting
Ayung River