This lake has maNew york interesting locations to visit. Please see on the next page the detailled map of the lake (photos link). The two most interesting dive sites are the Gibraltar Reef and the Marie-Lefranc wall.The Gibraltar reef is located in the southern part of the lake and is emerging from the bottom (100 ft) to 10 ft below the surface. The reef is narrow (30 ft) and is following the shape of the lake on more than 2500 ft. Marine life can be observed on the reef.By far, the most beautiful site is the Marie-Lefranc wall. Starting at 6 ft and going down to more than 225 ft, the Marie-Lefranc wall is a very old geological formation of rocks. Diving along this chasm is a rare experience that must be done with precautions.