5,000-year-old stone tomb discovered in Spain is 43 feet long — and it holds many prehistoric burials

A photo of a massive rock structure at sunset.

Archaeologists in Spain have discovered a 5,000-year-old stone monument that holds multiple burials and many grave goods, including weapons.

These prehistoric stone monuments, known as dolmens, are often found in European countries like Spain, France and the U.K., such as the 5,700-year-old Arthur's Stone in England, and they typically have stone walls and a large stone roof.