Even if the estate ultimately complies with all the rules of the province, they still have to deal with additional requirements. Brana, the trade organization for natural cemeteries, sets strict requirements for natural graves. For example, there must be eternal rest and nothing is allowed in the ground that cannot organically connect with the soil, says chairman Walter Kooy. “The deceased’s clothing must be made of cotton, the pacemaker is removed and the coffin must be made of certified natural wood,” he lists.