Los Mallos de Riglos

The Mallos de Riglos are a set of conglomerate rock formations in Hoya de Huesca comarca, Aragon, Spain. They are located near Riglos some 45 km (28 mi) to the northwest of the city of Huesca. Rising to some 300 metres (980 ft) high (c. 1000 metres or 3,300 ft (1,000 m) above sea level), they form part of the foothills of the Pyrenees

https://es.wikipedia.org/wiki/Mallos_de_Riglos
https://en.wikipedia.org/wiki/Mallos_de_Riglos