A very interesting place for those who care about history, in particular military and fortification.
A huge fort, most of the underground galleries are accessible
We need flashlights and preferably a knowledgeable guide
In one place there is a sinkhole in the flooded lower floor, be careful!
A ruined fort dug into the ground. There is a place to climb inside. Inside there are limestone or salt stalactites and stalogmites, it was interesting to see, although in some places it is scary inside, since everything is collapsed and as if it could collapse.
One of the most difficult to access of the 4 most popular. The tunnels have been preserved, but they are badly destroyed and be careful. But you can still walk through them.