Santa Cruz Dolmen is a funerary monument dating from 4000 BC, formed by an artificial mound inside which there is a burial chamber composed of several stone slabs. The mound covering the megalithic monument was flattened and the chamber was levelled to its foundationsand in 1936. The current chapel and burial mound are therefore of modern construction.
The dolmen is composed of five large slabs of stone and two smaller ones that form a rectangular chamber that must have had an entrance on its southeast side. It is large in size, as a person can move around inside standing upright. The shape of the covering is unknown, although it was most likely supported by a single slab.
Another element that makes Santa Cruz Dolmen of special interest is the group of paintings, engravings and pitting that covered the inside of the chamber. The remains of the decoration still conserved comprise red strokes of paint, with predominantly broken lines.