1. Los Roques de García is a natural site located in the Teide National Park on the island of Tenerife, Spain. It is famous for its stunning rock formations created by past volcanic eruptions, including the Roque Cinchado, Roque de la Catedral, and Roque del Dedo. Visitors can take a hike along the marked trails to explore the area and enjoy panoramic views of the volcanic landscape. Los Roques de García is also home to a unique species of plant called the Teide violet, which only grows within the park.

2. Los Roques de García is open 24/7 and admission is free. However, visitors are advised to check the weather conditions before visiting as the area can be closed during adverse weather conditions. There is no phone number available for Los Roques de García.

3. There is no ticket required for visiting Los Roques de García as it is a natural site. As for transportation, visitors can take a bus or drive themselves to the Teide National Park, which is located in the center of the island. From there, there are marked trails leading to Los Roques de García.