Mačkovica is a 1280-metre long and 51-metre deep cave in the immediate vicinity of Laze. The entrance tunnel descends gently and then widens into the Small Hall, famous for rimstone pools, which form miniature cascades during major floods of the Planinsko Polje. From here, a short tunnel ascends towards the passage to the Great Hall, which has a volume of 30,000 m3. Information and visits are available by prior arrangement from: .