Guadeloupe's western flank drops 1,467 meters from La Soufrière's summit to the Caribbean in less than twelve kilometers, carving a network of steep ravines through volcanic rock softened by three centuries of rainfall. The canyons above Bouillante formed as acidic geothermal springs dissolved basalt from eruptions dating to 200,000 BCE, leaving smooth chutes, plunge pools, and vertical drops now threaded by rope systems installed by French Alpine guides in the early 2000s. What began as technical training routes for military rescue teams opened to civilian sport canyoning in 2008, when the first commercial operators secured permits from Parc National de la Guadeloupe. Malendure Beach serves as the staging point because it sits at sea level directly below the primary descent corridors — the rainforest gorges of Ravine Chaude and Canyon Paradis, both fed by perennial streams that maintain flow even in Carême dry season. Morning departures from the beach avoid the convective thunderstorms that build over Basse-Terre's mountains after midday, a weather pattern driven by trade winds lifting moisture up the island's spine. The proximity to Cousteau Reserve means the same coastal zone supports both underwater coral exploration and highland canyon descents, a pairing unique among Caribbean islands. The geology dictates technique. Guadeloupe's andesite has higher friction than the limestone common to European canyoning sites, allowing controlled slides down rock faces that would require harness rappels elsewhere. Guides rig fixed lines at the four major waterfalls — drops ranging from eight to twenty-two meters — using stainless hardware rated for saltwater corrosion, replaced annually before hurricane season. Between rappels, participants navigate natural water slides, jump into pools depth-tested to four meters, and traverse log jams of mahogany and gommier trees felled during tropical storms. The Parc National designation prohibits bolting or permanent anchors, so all rigging relies on natural rock features and living tree trunks assessed for structural integrity each season. Family-adapted routes trim the four-hour descent to two hours by bypassing the tallest rappels, substituting guided scrambles down boulder fields. The standard adult itinerary includes twelve rappels, three jumps, and a final twenty-two-meter abseil into a canyon pool thirty meters inland from where the stream meets the Caribbean, a descent that requires participants to manage their own belay device under guide supervision.