Head explosion zone ahead, dont say I didnt warn you..

Johnson's Hypothesis These observations led to a new working hypothesis for the function of the Nasca lines that was different from any previous idea: geological faults and alluvial gravels provide pathways for ground water flow, and they transmit water as a zone of concentrated flow into the valleys. These geological features collect water in one part of the drainage and conduct it across and down the valleys to locations where it can be reached by digging puquios or wells, or to locations where the water table is high enough for springs or seepage to be present on the surface. The ancient people realized they could find a reliable source of fresh water at these locations and that is where they established their habitation sites. Johnson claims the ancient Nasca marked the flow of subterranean water with geoglyphs. He argued that there are five factors that are consistently found together: geological faults and/or higher permeability sands and gravels with the alluvial fans, archaeological sites, an aquifer, a source of fresh water (spring, seep, puquio, or well), and the geoglyphs that mark their location. Where one or more of these features are found there is a high probability the others are present. After Dave returned from Peru in 1996 and explained his hypothesis to me, I recommended that he collaborate with professional geologists since the scientific community would be very skeptical of his findings that were largely based on dowsing. I returned to Peru in 1997 to further investigate the area of my projected surface survey, to reacquaint myself with the area where I had not done field archaeology in almost 35 years, and to consult with colleagues. I again spent the majority of my time with Johnson and volunteers who had joined him. I was able to visit more of the remote parts of the drainage and participated in the discovery of many new geoglyphs which Johnson had a knack for finding. Dave began contacting geologists and hydrologists to participate in the project. He secured funding from the National Geographic Society for his water research in 1998, and I was awarded a grant from the H. John Heinz III trust to undertake my archaeological survey of the lower Nasca and Rio Grande rivers: