The living spring is a karst spring located in the southwestern part of Sofia, with a height of 1070, and is characterized by a natural formation, with green meadows surrounding it, huge trees and flowers. Perhaps one of the most beautiful things about the spring is the rocky cave, which is thousands of years old and is fed by the water of this spring. Inside it, a stagnant natural pool was formed, attracting tourists, visitors and nature lovers from all over the world.