The Cala de Tacorón is a privileged place for observing the Ladera of El Julan that covers the inclined plane where the SW flank of the volcanic edifice of El Golfo- Las Playas broke off more than 200.000 years ago, trawling to the bottom of the sea around 130 km3 of rocks. Near the Cala, something highlighting in the coastline is a little “lava delta” that was created when basaltic lava flows from the southern ridge plunged into the sea less than 20,000 years ago. We can also observe beside delta the Montaña de Los Cardillo’s, a volcanic orange-colored and red cone-formed because of the fragments’ accumulation emitted in the volcanic explosive phases. It’s especially visible the conduct of the volcano’s alimentation.