Otruševec

Otruševec is a village in the Samobor area, roughly four kilometres north-west of the town centre and about 320 metres above sea level. Its defining landmark lies underground: Grgos Cave, accidentally discovered by Josip Grgos in 1973 while he was collecting stone for lime production. The original cave is around 30 metres long, descends 19 metres and contains two chambers rich in flowstone; a second, 130-metre cave with three chambers was found in 2007. Above this karst system runs the Otruševec Educational Trail, Croatia’s first trail of its kind, opened in 1990 and renewed in 2018. The current route extends for about two kilometres, links nine interpretation points and takes approximately ninety minutes at an easy pace. Its panels introduce visitors to a sinkhole, air vents, a traditional lime kiln, terra rossa soil and local legends of giants, connecting geology with the village’s former working landscape. Otruševec is therefore especially rewarding as a half-day excursion from Samobor, with one coherent story unfolding below ground and along the surface trail.

Otruševec occupies the hilly countryside behind Samobor, where a small belt of limestone interrupts the surrounding landscape. That stone shaped the village’s identity: traditional kilns produced lime, and the search for suitable rock led to the discovery of Grgos Cave in 1973. The Croatian Encyclopaedia records a preserved lime kiln, the Chapel of the Holy Cross, farming and livestock raising, while the visitor interpretation focuses on karst formations and terra rossa soil. Otruševec is therefore more than a village with a single show cave; its geology can be read through the work once carried out by local residents. Its position only a few kilometres from Samobor allows an easy excursion, yet the experience remains highly specific to the village: flowstone underground, sinkholes and breathing holes along the trail, and a lime kiln at the final interpretation point.