sterling silver buckle pyroclastic culatta leather beltthe pyroclastic belt has been hand cut from a sturdy washed and tumbled 3. 5mm vegetable tanned horse culatta leather with a rotten corpse matte black dyed finish. culatta is a special cut combined of the rear just above the cordovan, the belly middles and the hind shanks, offering a dense structure, tight grain and medium to firm temper. vegetable tanning is a traditional method of treating the hide using natural extracts such as tree bark, for a