Surloti, Rock formation in Kalabaka, Greece.

Surloti is a rock on the southern side of the westward-facing valley partly settled by Kastraki, a northern suburb of Kalabaka in Thessaly, Greece. Holy Spirit Rock stands opposite it on the northern side of the same valley, which rises into the part of the Meteora massif holding the highest density of monasteries. The little-known Monastery of St. Eustratius (Moni Agios Efstratios) is built on the rock.

This formation became a central part of Meteora starting in the 14th century, when Orthodox monks built monasteries on similar peaks across the region. That period marked the start of a monastic movement that transformed these isolated rocks into religious centers.

The Monastery of St. Eustratius sits atop this rock, showing how religious communities built their spaces within the natural landscape. The monks chose this isolated location for spiritual practice and protection.

Surloti stands on the southern side of the valley above Kastraki, opposite the Holy Spirit Rock; the valley path climbs toward the densest cluster of Meteora monasteries. The rock is not a marked visitor site, so it is seen from the village lanes and viewpoints of Kastraki rather than from a trail of its own.

From its position on the southern side of the valley, this rock offers direct views toward the Holy Spirit Rock and the flowing Pineios River beyond. This sight line connects multiple highlights of the Meteora landscape within a single perspective.