Take an unforgettable tour out of Isla Santa Cruz in Ecuador to the incredible lava tunnels. The tunnels are more than 1km in length and were formed from a molten-lava flow that solidified. As if that's not cool enough, the tunnel has electric lighting, so visitors can explore them safely and without fear. Tours to the lava tunnels are offered in Puerto Ayora, making it the perfect excursion for adventurers. This tunnels are usually visited on the Highlands Tour (Tour Parte Alta), that also takes you to the Pit Craters "Los Gemelos" and to a Giant Tortoise Ranch.