Hinni canyon is a unique canyon valley in all of Estonia, located in a specially managed zone of Haanja Nature Park.
Hinni canyon is carved into sandstone from the Devonian period. It is a 15–20 m deep, 300 m long, steep gulch with the rapidly flowing Enni creek cutting into its sandstone bottom.
Intertwined layers of 5–6 m high white and yellow sandstone outcrops are exposed along the steep sides of nearly 200 m of the gulch. The fallen trees, the small cave spring nearby, and the rapidly narrowing trail add to the ancient feel of the area surrounding Hinni canyon.
The object is not lighted, which is why recommend to visit it during the daytime.