In the rocky region of Kakavos, in the SW part of Lemnos, inside a stone cave, stands the chapel of Panagia Kakaviotissa. The structure, which is small (with an area of 18,36 sq m) consists of two chambers, shaped by low walls (between 1.01 m and 1.97 m tall), 0.48-0.67 m thick) built from rough and semi-processed local grayish stone and tufa. The eastern wall of the chapel is attached to the rock, while the other three sides are free-standing. The sanctum is separated from the central chamber by a transverse stone wall that serves as an altar screen.
On the same site there are records of a small monastery which, in the 14th century (1305), became a metochion [monastery dependency] under the ownership of the Monastery of Megisti Lavra on Mount Athos. Divine liturgy is celebrated at the chapel every Tuesday after Easter Sunday, when the holy icon of Panagia Kakaviotissa, the sole movable relic that survives from the metochion, is transported to the site.