Sunlight cuts through the rainforest as the van drops you at Soufrière’s rim—steam rising from the sulphur vents, the air a warm, mineral-laced whisper. The first stop is the Caribbean’s only drive-in volcano, where bubbling mud and hissing springs make geology feel immediate; the guide points out fumaroles and explains how volcanic gases shape the coast. From the sulphur flats the route slides into shaded paths at Diamond Botanical Gardens, where mineral-streaked rocks and tropical blooms crowd the path and the aptly named Diamond Waterfall dyes its plunge pool with rust and ochre.