Wall is constructed in courses of med-large rounded basalt stones locally sources in two faces with a rubble core packed w/ tiles and smaller stones. Mortar is used as a bonding agent. While the wall seems likely equal to 16002, we cannot yet link them, and its east phase appears to be off alignment. Moreover, a large concentration of wall stones collapsed from west face suggests up to 4 courses were built in stone. No such collapse has been found in association to 16002 (see sketch). After opening new window in central east exterior, we found foundation linking 16002 with 16003.