AT an exhibition, a dark-skinned man with wavy hair unrolls some material resembling a straw mat on a low wooden platform. Taking off his shoes, he sits cross-legged on the 1 x 2 meter piece of material. He takes something from a plastic cup near a stack of that material, then starts etching the material he sits on. In a short time a unique motif has been sketched on the sheet.

This material is not for sitting on, but is dry bark which is used a