Kerkis or Kerketeus (Greek, Modern: Κέρκης, Kérkis; Ancient: Κερκετεύς, Kerketeús) is an extinct volcano, forming the bulk of the center of the Greek island of Samos. Its highest peak, named Vigla (Βίγλα), its maximum elevation is 1,433 m (4,701 ft), making it the second-highest peak in the East Aegean (after Fengari on Samothrace).