Dolmen de El Sotillo Historical milestone · Leza, Cuadrilla de Laguardia-Rioja Alavesa, Álava Dolmen discovered in 1955, with a circular chamber formed by nine stone slabs. 1955 Photo: Ángel M. Felicísimo from Mérida, España (CC BY 2.0) What to see and do in Leza