Improper gate design: A - the gate at the Musinska Cave allows bats to fly in and out, but it is not optimal. B - the cave at the entrance of Kalna Matnitsa Cave remains open to allow bat access. C - The Kaleto Cave entrance is equipped with a gate, that might stop bats, but does not stop visitors. D - The gate at the Uhlovitsa show Cave is still waiting for its renovation. E - Although the intention of the gate at the Bratanova Cave entrance is to protect bats, it is built without consulting with the EUROBATS recommendations. F - The gate at one of the entrances of the Magurata show cave. Photo credit: S. Deleva.