Hiking to Grand Bassin Reunion Island: A Guide to the Forgotten Valley

Grand Bassin is a remote pedestrian-only settlement located approximately 650 meters below the rim of the Plaine des Cafres on Reunion Island. This volcanic amphitheater remains one of the few inhabited places on the island without road access, reachable only by a steep 4.5-kilometer trail that tests even seasoned hikers. The valley earns its nickname Little Mafate due to its extreme isolation and the self-sufficient lifestyle of the handful of families residing at the bottom of the gorge.

The Descent from Bois Court

The journey begins at the Belvédère de Bois Court, a viewpoint at 1,550 meters elevation that offers a vertical perspective of the tiny houses far below. From this height, the hamlet looks like a miniature toy set surrounded by vertical green ramparts. The trail starts to the left of the viewpoint and immediately transitions into a series of tight, rocky switchbacks that descend rapidly through the brush.

Trail Logistics and Terrain

Gravity does most of the work on the way down, but the irregular basalt steps demand constant focus to avoid twisted ankles. You will pass the Oratoire de Sainte Rita roughly one kilometer into the descent, a small shrine where locals often leave offerings. The path is almost entirely exposed to the sun, which means the black volcanic rock radiates heat by mid-morning. I suggest a 6:30 AM start to ensure you reach the shaded valley floor before the humidity rises. A 2017 study recorded nearly 80,000 visitors on this path over nine months, making it the fourth most popular trail on the island, yet it rarely feels crowded due to the physical barrier of the climb back out.

The Petit Monte-Charge Supply Line

One of the most distinct features of the valley is the freight cable car, or Petit Monte-Charge, installed in 1985. Before this system existed, residents had to carry every kilo of supplies—including furniture, gas cylinders, and groceries—on their backs up and down the ramparts. While tourists cannot ride this lift, you can watch the small metal crate glide across the abyss from the Bois Court station. It serves as the primary lifeline for the gîtes, bringing in the fresh ingredients used for the evening caris served to hikers.

Life and Lodging in the Islet

Reaching the bottom involves crossing a bridge over the Bras de la Plaine river, where the temperature is noticeably cooler than on the sun-scorched slopes. The village itself is a collection of colorful houses, vegetable gardens, and poultry pens. Life here moves at a pace dictated by the sun and the arrival of hikers.

Staying in a Traditional Gîte

Most visitors choose to stay overnight to avoid the grueling return climb on the same day. There are currently about nine active gîtes in Grand Bassin, most charging approximately 50 to 55 Euros for half-board, which includes a dormitory bed, a multi-course Creole dinner, and breakfast. The food is typically cooked over a wood fire, featuring local specialties like lentilles de Cilaos or cari poulet. Booking several weeks in advance is essential, especially for weekends, as these lodges serve as a popular retreat for Reunionnais families.

The Voile de la Mariée Waterfall

About 30 minutes past the village center lies the Voile de la Mariée waterfall. It is critical not to confuse this with the famous waterfall of the same name in the Cirque of Salazie. This specific cascade drops 40 meters into a wide, deep basin of turquoise water. The pool is deep enough for swimming, though the water temperature rarely exceeds 18 degrees Celsius even in the height of summer. The rocks surrounding the basin are slick with moss, so care is needed when approaching the water's edge for a photograph or a dip.

The Legend of the Timise

The valley is home to the Mascarene Petrel, a rare seabird that nests in the cliffs. Locals long associated the bird's nocturnal, child-like cries with the Timise, a mythical spirit or bogeyman said to haunt the basin at night. Legend says the Timise would brush past travelers carrying oil lamps, snickering in the dark. While you are unlikely to encounter spirits, the sound of the petrels echoing off the canyon walls at dusk adds a haunting layer to the isolation of the valley.

Frequently Asked Questions

How long does it take to hike to Grand Bassin?

The descent usually takes between 1.5 and 2 hours for a fit hiker covering the 4.5-kilometer distance. The return climb is significantly more taxing, typically requiring 3 to 4 hours to navigate the 650-meter vertical gain under the sun.

Can I visit the waterfall without hiking?

No, there is no road access or tourist helicopter service directly into the basin for day trips. The only way to see the waterfall from the rim is through a telescope at the Bois Court viewpoint, which costs approximately 1 Euro for a few minutes of viewing.

Is there drinking water available on the trail?

A pumping station is located roughly halfway down the trail at the two-kilometer mark where you can refill bottles. However, you should still carry at least two liters per person, as the ascent is exceptionally dehydrating due to the lack of shade on the switchbacks.

Do I need to book the gîtes through an agency?

While you can use the central booking office of the Reunion Island Tourism Board, many gîte owners prefer direct phone calls for reservations. It is common for owners to speak only French, so having a few basic phrases ready or asking a French speaker to help with the call is beneficial.

What is the best month to visit Grand Bassin?

The dry season from May to October offers the most stable weather and cooler air temperatures for the climb. During the cyclone season from January to March, the trail can become dangerously slippery, and the waterfall may become too powerful for safe swimming.