Grenada was formed by volcanic activity. Visible evidence of this explosive beginning can be found at two crater lakes on the island. One is Lake Antoine in the northeast corner. The other is Grand Etang Lake. This crater basin is located in the Central Mountain Range at an elevation of 1,740 feet. The 36 acre lake was formed when a volcano collapsed during eruption and then filled with water. Encircling the area is a trail system within Grand Etang National Park. These scenic hikes range from 15 minutes to over four hours.