u/Defiant-Sherbert6512

Hey y'all, my friend and I will be camping at Pedernales Falls later this summer. We are planning on camping at one of the electric sites. The campsite descriptions say that they come with a fire ring with a grill. I have never used these before; can someone please explain how they work? Do they need firewood?

The photo above is a picture I found online of one of the grills.