The Fortaleza de Ansite consists of several rock formations with multiple caves rising out of the valley near Santa Lucía de Tirajana.The are counted as a fortress because they were (and are) hard to access. Supposedly it was the last stonghold of the prehispanic people in Gran Canaria and was conquered by General Pedro de Vera in 1483 after a 5-year-long siege, during which many Guanches surrendered themselves. According to the story we heard, Bentejuí, one of the leaders of the Guanches and several of his followers in the end preferred to jump off the cliffs to surrendering to the Spanish. The Fiesta de Ansite commemorates this event each April 29th.
(The first 2 pictures are from a view point, the next from the biggest fortaleza incl. some caves.)