Located just east of Syracuse, the fabulous Green Lakes State Park is a recreation haven for a variety of tastes. Hiking trails, biking trails, a swimming beach, campgrounds and even a 18-hole golf course attract thousands year-round. In addition, Green Lake is one of two meromictic lakes in the area. The other is Round Lake which is located adjacent to Green Lake. Interestingly, there is no fall and spring turnover of waters as with other lakes. Round Lake is a National Natural Landmark registered at 180 feet deep and Green Lake is measured at 195 feet deep.