On the sozuth-western slopes of Nanos massif there are some rock walls, called Gradiska Tura. There some short rock climbs are possible and also one ferrata is made for visitors. As these rocks are dry early in the season, this route is nice almost any time of the season. Here's my Jasmina anjoying the route and my youngest son Lenart, not-so-much-enjoying. But the tour was fine at the end. Spring, 1998.