Take a stroll through this unique tunnel carved right into the sea cliffs, connecting you from the Doca do Cavacas natural pools to Praia Formosa. It's a fantastic little adventure where you can peer out of windows cut into the rock, offering dramatic views of the crashing waves below. The path is well-lit but can be a bit damp from sea spray and dripping water, so watch your step and just enjoy the cool, atmospheric walk and the sound of the ocean right beside you.