Route 90A encloses the north of Kapsos forming a big bend from Kavousi on the west to Lastros on the east, located near the source of a S-N draining valley with Kapsos on its left and Tsigouni Gorge on its right.
Route 90A is situated around the north of Kapsos, creating a large curve from Kavousi in the west to Lastros in the east, near the source of a south-north draining valley with Kapsos on its left and Tsigouni Gorge on its right.