[Source: Angela Cara Pancrazio, Arizona Republic] -- Streams of sweat rolled down Mark Hackbarth's face. The archaeologist and his crew dug with shovels and hand trowels. Nearby, bulldozers rumbled under the hot summer sun on another corner of the downtown construction site for the new Phoenix Convention Center. Because of tight construction schedules, Hackbarth had 30 days to excavate the remains of a prehistoric Hohokam village that had been preserved under the old Phoenix Civic Plaza. When Hackbarth was called to the site at the end of July, he expected to find Hohokam ruins. But even after 20 years of archaeological work in the Valley, he never imagined the immensity of what he found.
Hackbarth uncovered three of the earliest known pithouses in the Phoenix metropolitan area, houses that were 3,000 years old. And as he dug, he kept finding more traces of the ancient civilization. Today, thousands of artifacts from the dig rest in a Tempe laboratory as Hackbarth analyzes one of the Valley's greatest archaeological finds. With downtown Phoenix engrossed in its biggest burst of construction since World War II, the discovery in its heart is a reminder of how far back the area's history goes. [Note: To read the full article, click here. Photo of Phoenix Convention Center excavation by Angela Cara Pancrazio, Arizona Republic.]