The same karstic limestone that created the Plitivice Lakes is responsible for these vast caverns hidden beneath verdant farmland 15km northeast of the national park (it's well signposted from the main road). Visits are by way of 45-minute guided tours (minimum two people) through chambers with cheery names such as 'Dragon's Gorge' and 'Hall of Lost Souls'.
Wear warm clothes and sensible shoes.
