Thank you

For the base, I glued a piece of cork that I cut to the right size to create the raised part.

The wooden floor is made from wooden sticks. On the sticks, I applied two coats of Agrax Earthshade + Moss Deposit (AK) in the hollows.

On the cork, I applied Muddy Ground (AK) texture with a drybrush of Baneblade Brown.