Morne Trois Pitons, Mountain peak in Roseau Valley, Dominica

Morne Trois Pitons is a volcano in southern Dominica rising to 1,387 metres, about 10 km northeast of Roseau. It belongs to the Grande Soufrière Hills, and its slopes are covered by tropical forest. The summit area has active geothermal features, including fumaroles and hot springs.

The mountain was formed through volcanic processes that shaped the island's landscape over time. A national park encompassing this area received UNESCO World Heritage status in 1997 for its exceptional geological importance and natural variety.

The name comes from the French for "three peaks", after the mountain's three summits. The surrounding Morne Trois Pitons National Park, which covers much of the volcano's area, was inscribed on the UNESCO World Heritage List in 1997. The Kalinago, the island's original inhabitants, are the source of the name for the nearby Carib Territory.

The summit stands about 10 km northeast of Roseau, and the surrounding terrain is forested and hilly, so plan the approach from the capital. Rainfall averages around 1,868 mm a year, heaviest in August at about 266 mm and lightest in March at about 50 mm, which shapes when the ground is firmest. Temperatures near the mountain average about 20 °C, dipping to 19 °C in April and reaching 23 °C in September.

Active fumaroles and hot springs persist on the mountain today, revealing that volcanic processes continue beneath the surface. These geothermal activities visibly shape the landscape and remind visitors they are experiencing living geological activity.