During an expedition to the volcano in 1768, Governor Léonard de Bellecombe, accompanied by authorising officer Honoré de Crémont and slave porters found themselves at the edge of the area surrounding the volcano. Finding no way to get down, the governor retraced his steps. M. Crémont, more determined, pushed on, promising six pieces of blue cloth to any black who could find their way down the ramparts. After much searching, a slave called Jacob found a passageway and headed down the cliff with M. de Crémont.
Although the governor never went down himself, the site was given his name, Pas de Bellecombe.
On Wednesday 28th August 2019, Michel Vergoz (Mayor of Sainte-Rose) unveiled the plaque in the car park with the new name, Le Pas de Bellecombe-Jacob, thus paying homage to the slave who first gained access to this area surrounding the volcano.