Piatra Roșie, which means Red Rock, was a Dacian hill fort two days march to the west from Costești-Cetățuie fortress, at Luncani in Boșorod commune, Hunedoara County.

It was built in two phases.

In the first phase a long (102 m) rectangular main citadel was built at the height of land[2] with watch towers on each end and two outlying watch towers.

Later the larger area inside the watch towers was enclosed with walls.

[3] It appears that the hilltop was flattened in the process in order to produce a usable space.