Happy international women’s day!
This is Utrobata cave (The Womb cave) in Bulgaria.
Things get a different perspective when your ancestors spend a significant amount of time carving a cave by hand in a specific shape, in order for the sun to be able to reach its bottom only once or twice a year....
Archeologists hypothesize that an altar built at the end of the cave, which is about 22 m deep, represents either the cervix or the uterus. At midday, light seeps into the temple through an opening in the ceiling, projecting an image of a phallus on to the floor. When the sun is at the right angle, in late February or early March, the phallus grows longer and reaches the alter, symbolically fertilizing the womb before the sowing of the spring crops.