San Cristóbal is the most eastern islands of the Galapagos and thus one of the oldest and has a settlement at Puerto Barquerizo Moreno with harbor and airport. The 730m high Cerro San Joaquin in the lush green south is the eroded remains of a volcano. Visitors site are all on the southwest of the island (Frigate hill, Isla Lobos), the diving is done in the west and northeast. San Cristobal (Global Volcanism Program)

The most well known dive site is the Kickers Rock, a small islet that rises steeply to148m, with a massive split through the middle. From far it looks like a sleeping lion, thus the Spanish name Leon Dormido. This is the remnant of a tuff cone. No seals can live here, but underwater are huge schools of salemas and Jacks, barracuda, rainbow runners and Galapagos sharks.

On the rocks live nudibranchs, crustaceans and other invertebrates. The dive is quite shallow (20m). Punta Pitt lies at the most northeastern point of San Cristobal. This part of the island is very arid. This is the only place, you can see all three species of boobies at the same time. There is a whole colony of red-footed boobies (the other one is on Tower) and you also can see masked and blue-footed boobies.