To the north of the old town of Orihuela and its smaller satellite of Callosa de Segura is a series of rugged red hills that, despite initial appearances to the contrary, contain much good climbing. The main area of interest is the classic multi-pitch offerings on the Pared Negra. The area is close enough to the Alicante/Benidorm area to be a reasonable objective for a day's visit, and although the cliffs have been climbed on here by the locals for over 40 years, visitors have always been rare.
The esoteric local guide (Senderismo y Escalada por la Vega Baja del Segura) covers many more climbs in this intriguing area.