Velebit
There are hundreds of "holes" on Velebit. It has the largest and deepest caves in Croatia. The three-part "Lukina jama" cave is 1392 m deep, making it one of the deepest caves in the world, and the deepest in southeast Europe, while the "Slovačka jama" is 1320 m. What makes it unique is that it is completely vertical, steepest in the world. At the bottom of the pothole is a water course or siphon with branches that are still unexplored. A kind of leech was discovered in the pothole, which has been ascertained to represent a new species, genus and family; it has been named "Erpobdella mestrovi".
Badami cave temples
Caves 1 to 4 are in the escarpment of the hill in soft Badami sandstone formation, to the south-east of the town. In Cave 1, among various sculptures of Hindu divinities and themes, a prominent carving is of the Tandava-dancing Shiva as Nataraja. Cave 2 is mostly similar to Cave 1 in terms of its layout and dimensions, featuring Hindu subjects of which the relief of Vishnu as Trivikrama is the largest. The largest cave is Cave 3, featuring Vishnu-related mythology, and it is also the most intricately carved cave in the complex. Cave 4 is dedicated to revered figures of Jainism. Around the lake, Badami has additional caves of which one may be a Buddhist cave. Another cave was discovered in 2015, about from the four main caves, with 27 Hindu carvings.