The 2003 field season evidence shows that the Archaic Foragers period use of the river valley and adjacent puna appears to have been relatively light in comparison with the occupation in the B2 - San Bartolomé area. Diagnostic projectile points and aceramic sites represent the only strong evidence of Archaic Period occupation in Block 3 since only test excavations in B3, at the site of Taukamayo [A03-678], were dated to the early part of the Middle Horizon.