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Descent 305 - Pre-order is open!!
Our August/September issue has a publication date of 2 August, and it is a special summer bumper issue full of stories of exploration and wonder from the underground world.
Yeh that's been on before, but that's rather cool. I guess the sandstone is more sandstone limestone as they say it dissolves, maybe it's glued together with limestone?
Looks like a big cave anyways, I would love to visit and explore the area.
Yeh that's been on before, but that's rather cool. I guess the sandstone is more sandstone limestone as they say it dissolves, maybe it's glued together with limestone?
Looks like a big cave anyways, I would love to visit and explore the area.
Quartzite, actually. This is only marginally soluble, so the caves form over tens of million years, rather then tens of thousands years which is more typical of normal karst.