The path begins at a car park above Praia da Marinha, the wind pulling salt through a stand of prickly coastal pines while the ocean lays out raw blue beyond the cliff edge. Guides in white shirts assemble a small group, hand out bottles of water and a quick route briefing; the first steps drop onto a narrow trail that threads a sequence of cliff-top coves. Each fold of the coast reveals a new geology—arches cut by pounding surf, sinkholes hollowed into soft Miocene limestone, and the famous sea caves that make Benagil a byword for Algarve scenery.