The ravine Raganu katls is a huge sulphosis funnel or ravine formed by the action of various watercourses. This ravine is formed from the side of the valley as a partially cut 30m high and 20m wide cylinder. The maximum height of the rock walls is 20 meters. Its interior resembles a panoramic view of the geological museum, which depicts rock bedding, the structure of the layers, the layers of rock, and the color changes.
In the sandstone of the ravine, Raganu katls the layers of Gauja and Amata tails are opened, where the zones of red clay deposits and aerolite are spiraled. In the bottom part of the western side of the ravine Raganu katls there is a small, beautiful cave, from which a small brook flows out. The Raganu katls is known as the place where the movie “Būris” was filmed. In the upper part of the ravine, Raganu katls a small seasonal waterfall is created.
The outer edge of the ravine is split by the bed of the stream flowing from the slope, which ends with this 2.7 m high waterfall.
The impression of the ravine is diminished by the active process of erosion as well as numerous landslides and mud.
It should be noted that the ravine Raganu katls is a protected natural object. The ravine Raganu katls is part of the Gauja National Park Nurmiži ravine reserve zone, which can only be visited for scientific research purposes with the special permission of the Nature Conservation Agency of Latvia. Therefore, the ravine Raganu katls can only be viewed from the top view of the canyon.