Finding Terrarian in Region3

So i have problem. We all know you can get BaseParts in Region3.new() but i don’t know if this possible to check if there is any terrarian in this Region3.new() and if it’s possible then does it return material or terrarian etc. ? I want to check if there’s sand in region, or dirt, or air, water. Thanks everyone.

Solved: Any way to find terrain in a region? - #3 by opplo