This model is a village well. The walls have a stone block texture, with the wooden supports Which is for the 25/28mm scale.
It is made from hard plastic and come in a unpainted / unassembled format.
Sizes
Base Size: 50mm by 50mm
Height (at highest point): 60mm
Number of Parts in kit: 6
Original .stl files of this model can be purchased from fatdragongames.com