types present in the Pre-Clovis level, though, were notably absent from the experimental results; interior flakes and biface thinning flakes (Chandler 2001b). The possible anvil stone has received a great deal of scrutiny. This is a very large stone: 4.5 kg in weight, 21.6 cm long, 15 cm wide, and 12 cm thick. It is much larger than any other stones at this level (Ray 2000:69). Using the Sac River, experiments were conducted to determine if the stone could have been moved to this position by the river. Even during water discharges from the Stockton dam, the stone failed to be moved by the water. Ray and Lopinot have thus concluded that it is most likely a manuport, though other transport methods such as root wad rafting (trapped in floating tree roots) and ice-rafting can not be entirely ruled out (Chandler 2001b). One other curious feature regarding the stone's location is that the stone is broken into three pieces, situated very close together. One end of the stone is broken off, with a spall from the break. The broken piece is rotated 120 degrees from its original position and would be at a right angle to the flow of the water had its relocation been through water action. In addition, the spall, which is from the upper surface of the stone, is under the smaller piece. This is highly suggestive of the piece being deliberately moved after the break occurred (Ray 2000:69). Additional signs of modification on the stone include a pitted area at the point of fracture and percussion scars on the edges of the smaller fragment (Ray 2000:69). Three use-wear specialists have been consulted. Tom Dillehay of the Monte Verde site states that micro-use-wear analysis shows that the stone is manmade. Marvin Kay, a lithics expert from the University of Arkansas, and Stanley Ahler, a micro-use-wear investigator, both believe the modifications to be the result of natural actions (Ray 2000:70; Chandler 2001b). The possible hammerstone has undergone similar scrutiny with identical results. Evidence of modification to this stone included seven cones of percussion, all limited to a single poll of the stone, possibly indicating that it was used as a hammer (Ray 2000:70). While it is impossible to determine if these objects were ever used together, Ray and Lopinot argue that they were likely used to smash the bones of mastodons and other large game. They compare these