At 1,447 metres in height, Morne Diablotins is the highest mountain in the Commonwealth of Dominica, located in the Windward Islands of the Caribbean. Morne Diablotins is located in the northern interior of the island, about 15 miles north of Dominica`s capital Roseau and about 6 miles southeast of Portsmouth, the island`s second-largest town. The mountain is volcanic, and erupted 30,000-40,000 years ago. There are no known historical eruptions.