Walnut Slab Cave of the Mounds 989E. The length is 60 inches long. The widths are 12, 13, and 15 inches. Flattened thickness of 1 7/8 inches. In person sales takes precedence over web sales. Come see the slab in person. The website is updated frequently but there is a chance something online could be sold already. Feel free to email and inquire about specific slabs. Local pickup only, call/email for more information or to schedule.