The Tecuamburro volcanic complex comprises various peaks, including Cerro de Miraflores (1950m), Cerro la Soledad (1850m) and Cerro Peña Blanca (1850m). This last, which has several small vents releasing steam and sulfur, provides the most interesting climb, although its forested slopes mean no views until you're almost at the top.
Buses and minibuses (Q15, 1½ hours) leave regularly for the village of Tecuamburro from Cuilapa. From there it's a two- to three-hour hike (14km) to the summit of Peña Blanca.