Sulphur Springs

Sulphur Springs is a geothermal field on the island of Saint Lucia. It is located to the southwest in the district of Soufriere, a name given by the French meaning 'sulphur mine', because of the proximity of the town to the site. It is the most popular tourist destination in Saint Lucia, with approximately 200,000 annual patrons to the park, and is known as 'the world's only drive-in volcano'.

Source: Wikipedia