In 1948 Harrington and Willy Stahl found milling stones and a great wealth of Pinto, Mohave, and Silver Lake points in another part of California that is now desert. This is near Little Lake, which is fed by underground waters and small intermittent streams from the Sierra. Nearby, in glacial times, a small river cut a channel through a great lava flow, producing a falls that has now moved up half a mile from the edge of the lava. Here, where the blow sands of the Mohave Desert meet the lava, and under about ten feet of old, consolidated sand, Harrington and Stahl found milling stones and points in two feet of soil. This soil was dark with the remains of vegetation that must have been trees and bushes when the intermittent stream was still a steady torrent. Underneath the dark soil there was clay deposited by the stream at some period of great flow. Across about two-thirds of the camp site a similar coating of clay indicated that after the user of the milling stones and Pinto points had departed, the stream had overflowed again during a time of great rains. This time may have been the “Little Pluvial” of about 3,000 years ago, or the “Great Pluvial” that some say occurred 10,000 years ago when the glaciers had finally retreated, with the former the more likely date. In this camp site Harrington and Stahl found the post holes of some sort of hut or shelter, the oldest evidence of housebuilding in the New World.[58] [Illustration: _An animal head carved from part of the spine of a variety of llama, or camel, and reputedly found with fossils of other extinct mammals in the Valley of Mexico in 1870. About eight inches wide. (After Barcena, 1882.)_] A Paucity of Art Objects