Yagodinska, Show cave in Rhodope Mountains, Bulgaria

Yagodinska is a 10,500 m cave in the Rhodope Mountains with three levels; only the lowest, reached by 150 m and 80 m artificial tunnels, is open to visitors along a 1,100 m electrified path. Its natural entrance leads to the upper level, where a 4th-millennium BC pottery workshop was found. The show cave holds stalactites, stalagmites, stalagnates, draperies and cave pearls.

Exploration began in 1963 with the Chepelare Speleological Club under Dimitar Raychev, who mapped 8,500 m; further galleries were found in 1982–1986. The cave is about 275,000 years old. Its natural entrance leads to an ancient dwelling from the 4th millennium BC where potters fired clay vessels; the occupants left after an earthquake collapse.

The cave takes its name from the village of Yagodina. Inside, formations are nicknamed after figures such as Santa Claus, Snow White and the Seven Dwarfs, and Pijo and Penda. In one hall, speleologists have celebrated New Year's Eve beside a Christmas tree that stays fresh for several years, and 200 weddings have been held there.

The cave stays cool year-round, and well-lit paths guide visitors safely through the main chambers. Sturdy footwear is advisable since the ground is uneven and sometimes wet.

Between 15 August and 30 September, around nine or ten bat species gather each evening near the natural entrance, an autumn swarming site. Six of the cave's eleven recorded species are European conservation priorities, including the greater and lesser horseshoe bats. In winter mainly these two horseshoe bats hibernate inside.