Sony Kill Falls is located in Minnewaska State Park. Hidden away at the end of humbly-named “Shaft 2A Road” is 87-foot-high Stony Kill Falls. The waterfall pours into a natural stone amphitheater, chock full of moss-covered boulders, and is generally devoid of people. There is a swimming hole at top of falls known as 'nudist pool'. By custom, clothing is optional.