Biscoitos Gate is a deeper Biscoitos wall dive built around a dramatic gate-shaped opening that leads into an atrium-like chamber off the north coast of Terceira. The route is more committing than the name suggests, with depth, overhead structure, and equipment planning all mattering before divers reach the main feature. This is the kind of dive that rewards experienced teams looking for lava architecture and a decisive swim-through rather than a broad sightseeing circuit. Reef fish and occasional larger animals add interest, but the defining draw is the gate and the surrounding wall terrain.