To get to this lake from Salt Lake City, get to Big Cottonwood Canyon which is where Solitude and Brighton Ski resorts are located. Drive all the way to the top of the canyon (about 8 miles) and park at Brighton ski resort. Hike right up the lift line for about 15 minutes until you see a sign for Lake Mary on your right. From there it is another 15 minutes or so till you get to the lake and you will see many spots to jump(the lake is not very big, but very deep). This jump is probably the highest and you definately will need to get away from the wall to have a safe entry. This area is a watershed for the city of Salt Lake so it is illegal to swim or cliff dive. YOU HAVE BEEN WARNED!