Grotte de Marie Jeanne is a large cave system located on the southwest coast of Haiti in the town of Port-a-Piment. The cave entrance is positioned above the town at an elevation of 120 metres. Access to the entrance is via a rough trial up the side of the hill. The trial is steep in places however it does afford a beautiful view of Port-a-Piment.
The trip from the US involves a flight to Port-au-Prince (the capital and largest city in Haiti), a flight from there to Les Cayes and then a road trip along the south coast to Port-a-Piment. Coming from the south one passes through the towns of Port-Salut, Roche-a-Bateau, Coteaux, and Damassin before finally surmounting a final hill called "Mòn Pè" (My Father), one kilometre from the entrance to the town of Port-a-Piment. It is also possible to travel by road from Port-au-Prince to Port-a-piment.
Flights are available with American Airlines to Port Au Prince from both JFK Airport, New York and Miami International Airport.
Tortug Air offer daily flights from Port Au Prince to Les Cayes.
The journey from Les Cayes to Port-a-Piment is about 1 hour 30 minutes by car. Hire cars are available or arrangements can be made for visitors to be collected from Les Cayes Airport. The duration of the road journey to Port-a-Piment can vary according to local weather conditions. In severe weather conditions the coast road can become impassable during the hurricane season.
Port-a-Piment has a temperate tropical climate with an average rainfall between 800 and 1000 mm per year. The annual average temperature is about 28ºC. The prevailing winds are from the southeast.
There are essentially two rainy seasons. A short one in March-April and a longer, more intense one, from September to November and through the summer during the hurricane season, there can be additional rainfall from tropical depressions passing through the Caribbean.