You are in Index Heritage Chapel of Santiago
This is a dilapidated building, with masonry walls and a very weak roof. It consists of a rectangular nave and a semicircular apse that is somewhat narrower than the nave, connected in the middle by a toral arch, whose enclosure is covered with a quarter-sphere dome. Both the vault and walls are plastered and have partial remains of mural paintings (which used red, black and white tones to depict warriors, including St. James). In the same place there are four blocks that appear to support the three columns with double horseshoe arches.