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[Deesse23]

Tepui are tabletop mountains in the border region of Venezuela and Guayana.

They tower above the rain forest with 90° steep walls of up to 700m/2000ft, the highest one reaches up to 2800m/10.000ft total, the biggest one covers an area of 650km^2.
The climate is entirely different from the rain forest with average temperatures of only 10C. On top of those mountains there are endemic species of flora and fauna that can not be found elswhere on the world.

Of many of those Tepui we only have maps from radar equipped copters or from space, because they are engulfed by clouds most of the time. Man (who was on the moon already) has not set foot on many of them until now. Some of them have major caves, which are not explored yet and giant sinkholes that are up to 600m deep.