Grand Etang Lake is a submarine volcano that is presently extinct. It is located on the island of Grenada

Grenada

Grenada is an island country and Commonwealth Realm consisting of the island of Grenada and six smaller islands at the southern end of the Grenadines in the southeastern Caribbean Sea...

, in Saint Andrew Parish

Saint Andrew Parish, Grenada

Saint Andrew's is the largest parish in Grenada. The main town is Grenville, which is also Grenada's second largest town after St George's. Grenville is also known as La Baye .-History:...

. Evidence suggests that the Grand Etang Lake is connected to Kick em Jenny (active submarine volcano) as when Kick Em Jenny was bubbling, so too were the waters in Grand Etang Lake. The Grand Etang Lake is 1800 feet (548.6 m) above sea level and it is one of the two crater lakes on the island (the other being Lake Antoine). The lake is approximately 20 feet deep.

About Grand Etang Lake

One is able to discover distinct eco-zones because of the Park's varied elevation. There's also an azure-colored lake—actually a volcanic crater that long ago filled with water—sitting more than 1700 feet above sea level (as previously mentioned). Guided tours are available, or take a self-guided hike around the lake along a trail that meanders past waterfalls and through jungle touched with every shade of green you could dream up. One can spot bright-colored tropical birds, tiny bright-chartreuse lizards, a variety of orchids, and maybe even an armadillo. In one section you can glance across the lake and see Mount Qua Qua covered with mist. Trail hikes range from 15 minutes to 4 hours, so there's one to suit just about anyone. Monkeys can also be seen in the overhead forest trees.
http://www.worldsgreatesthoneymoons.com/Destinations/Caribbean/grenada.htm

Grand Etang Lake is represented on the base of the Coat of arms of Grenada

Coat of arms of Grenada

The official coat of arms of Grenada is a shield divided into four parts by a golden cross. In the center of this cross is the Santa Maria, Columbus' flagship. A British lion on a red field is shown in the upper left and lower right sections of the shield, with a golden crescent moon out of which a...

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