The Cold Sulphur Springs which is located in a very clearly defined volcanic crater known as Bellevue Mountain.
Morne aux Diables Volcano
Dominica has at least 8 potentially active volcanoes. One of these is Morne aux Diables, an isolated composite cone that forms a peninsula at the extreme northern end of the island. Measuring 7 kilometers diameter at its base and rising to a height of 856 meters, Morne aux Diables (creole language name meaning "Mountain of the Devils") is composed of a central complex of Pelean domes from which lithified block and ash flow deposits radiate out in all directions. A prominent fan of these lithified deposits extends southwest from the main dome complex to the Portsmouth-West Cabrits area. This center is complicated by the presence of five parasitic domes with their flank pyroclastic deposits forming an east-west belt across the southern side of the volcano.
Age dating suggests that the main cone building activity occurred between 1.5 and 1.0 million years ago. Exposed on the volcano's flanks are a number of unconsolidated valley-fill block and ash flow deposits suggesting more recent activity. One of these deposits on the north-east flank of the volcano has been recently dated at >46,000 years B.P.
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