Polyegos is a small isle ,half the size of Kimolos and at a short distance, (1 mile). Administratively It belongs to Kimolos. This is the best preserved geological island in the Aegean. The vegetation of the island (mainly maquis and brushwood) grows smoothly and undisturbed with its animal wealth (seal Monachus-monachus, rare reptiles and birds, goats, etc.).
Polyegos is particularly important scientifically and ecologically and has joined the Natura 2000 European project.