The summit of Kalvárie with an altitude of 239 m above sea level is part of the Porta Bohemica (Gate of Bohemia) massif on the right bank of the Elbe with three crosses on the top.
Thanks to the erosion activity of the Elbe River, the surface of the area is covered with primordial rocks, which is unique in the Bohemian Central Highlands. In the Kalvárie Nature Reserve, the most significant parts of the nature reserve are the steep rocky slopes with the occurrence of dry-loving rock steppe communities. Here we can find the endangered Green Lizard or the Bohemian Scrub Lizard, blooming in early spring.
There is also a nice viewpoint called Tři kříže, which offers a view of the adjacent landscape of the Bohemian Central Highlands, the Žernosecká vineyards and the Elbe River valley, which is called Porta Bohemica.