Mount Green Thumb

What's the highest summit in your world? Has anyone ever reached the top?
Mount Green Thumb located West of the Tiefling capital of Green Rock is the tallest mountain on Boscage 4, at 10 miles high, but it's smack dab in the middle of a radioactive wasteland, so no one has summited the peak. Anyone who did brave those hostile conditions would find a treasure trove hidden in many cave systems, as this was an artificial shelter built by the ancient Kel'tarar, but had sediments and dirt cover it after the bombing of Boscage 4, in addition to times toll. Those ancients have just woken out of their slumber and are getting their wits about them, trying to understand what's happened on the surface over the last 4,000 years.

Type

Megastructure