The Sacred pit of Garlo is an archaeological site located near the village of Garlo in Pernik District, Bulgaria.It was excavated in 1972 by Professor Dr. Dimitrina Mitova-Dzhonova and her team. Professor Dzhonova dates the pit around the 11th century BC and relates the site to the sacred pits found within the remains of the Nuragic civilization in Sardinia.
The sacred pit was constructed in a little valley lined with many springs in prehistoric times. The southern part of the pit is dug in the ground. Seven meters long corridor with thirteen stone steps leads into a round domed room at the center over the source there is a well with a depth of 5 meters.
Outside Sardinia such sites are excavated in Crimean Peninsula Crimea (Ukraine) and Palestine. The sacred pit is a sophisticated device,established entirely underground. The long axis of the well is oriented North-South bit it was constructed on the eastern slope of a hill, now above a small water reservoir built in the 1960s. The entrance to the underground chamber is located on the east side of the device. It represents a stair of 24 stairs 1.1 m wide. The first nine stairs are in open air, the next 15 are underground.
The stair leads to an underground vaulted round circular chamber with 4.2 m. diameter. On the top of the vault there is a circular hole to the sky. The opening is 2.3 m. wide. The underground stair joins the vaulted chamber by an arched gate 2.4 m high. The construction is 'almost identical' to the Funtana Coberta from Ballao in Sardinia.
How did the construction of the sacred megalithic facility and the entire religious complex built in the Village of Garlo remains an open question for modern historians and archaeologists. Whether immigrants from Nuraghe culture wished to have a religious facility in their new place of settlement or, local residents, led builders to build them such a facility for some reason it is very difficult to claim.