Here's a lovely article on the NY Times website by Henry Wismayer about the Juliana Trail through (or around) the Julian Alps. It brought back some great memories of my trip there in 2014; some of the areas I visited overlap with the trail. The 167-mile trail opened in late 2019, just before Covid hit. But Slovenia is open now, and so is the trail.
https://www.nytimes.com/2021/10/13/travel/slovenia-juliana-trail-hiking.html