i am trying to make a mod that is a home hidden in a mountain for an assassin/thief character and i had an idea to make a waterfall with a cave behind to put horses and other mounts although all the things i have tried to make a cave have failed so i would like to know: is it possible to make a cave were its basically just a hole in the mountain with the rest of the mountain on top basically this: http://freshhappiness.files.wordpress.com/2010/11/waterfalls2.jpg but with the waterfall covering it more