As with many World Heritage Sites, I think the reasons for its selection and justification of its Outstanding Universal Value aren't readily apparent when visiting. The cave itself isn't that impressive compared to others I've visited (Phong Nha in Ke Bang National Park, Vietnam immediately comes to mind as more impressive), but I'm sure the biodiversity and history justify its status on the WHS list.
Reaching the cave hasn't changed since the previous reviews. You need a car to get there, it's 10 euros to take a guided tour (only way to go inside the cave), and winter hours are from 10-2. I wasn't sure if the last tour began at 2, or if they closed the gates at 2, so I arrived at 1pm when I visited in November 2024. The museum is still nearby and included in admission, the nearby restaurant is closed at this time of year, and the view of the surrounding valley is as impressive as the cave itself.
I'll come back some day to take a tour of the lake deeper in the cave during summertime if I'm nearby, but I don't think I'll go out of my way to visit again.