Amazing Cave Of Mlynki In Ukraine. Amazing Artwork Of Recycled Tires In Service. Mlynki is a cave located in western Ukraine. Deep holes and cracks, huge galleries, bats, dirt and crystals will stand in the way of those who dare to come to Mlynki.Mlynki is a horizontal gypsum cave located in the Ternopolska Region. It is one of the most beautiful caves in Ukraine. Amazing Pictures Collection Of Nail Art. It is almost 45 km long; temperature inside the cave is about +9C all the year round.