Grand Etang Lake is a 13-hectare circular lake sitting in the centre of the forest reserve at 530 metres altitude. It is the most photographed natural feature inland on Grenada — a steel-grey mirror of water ringed by dense rainforest, with mist drifting off it on a wet morning. The crater walls rise about 100 metres above the lake on all sides.
A short walk from the visitor centre brings you down to a clearing on the shore. The path around the entire lake is overgrown in places and takes about 90 minutes — the muddy patches make sturdy shoes essential. Swimming is permitted but the water is cold and there are no facilities. Mona monkeys often appear in the trees around the visitor centre and along the lakeshore.