Havgas is the only gorge in the Lassithi plateau and through it flows the waters of the Ksenikos River, also known as Havgas. Gorge's starting point is in the settlement of Agios Konstantinos and ends at the neighboring plateau of Katharos.

The gorge has a length of about 4 km and it is relatively smooth and accessible to everyone, until the point where the beautiful lake of "Neraidokolympos" is located. The lake is formed at the base of a small waterfall, on top of which there is a large round boulder that blocks the path to the rest of the gorge. If you wish to continue from there, you will have to take first a few steps back, and then follow the E4 path on the side of the gorge.

On its slopes, there are many trees and bushes, which mainly consist of maples and hollies.