Riverfront Park archeological dig

Ashley Morton, of the Fort Walla Walla Museum, empties debris from a four-foot ditch, July 26, 2016, in Riverfront Park's Gondola Meadow. Archaeological testing is being conducted in the park as part of the redevelopment. (Dan Pelle / The Spokesman-Review)
Tiles, a marble, pieces of a utitily pipe and a rusty bolt are among the items found in the archaeological testing dig in Riverfront Park. (Dan Pelle / The Spokesman-Review)
James Burr Harrison III, of the Spokane Tribe of Indians Archaeology & Preservation Program and Ashley Morton, of the Fort Walla Walla Museum, peer into four-foot ditch, July 18, 2016, in Riverfront Park's Gondola Meadow. Archaeological testing is being conducted in the park as part of the redevelopment. (Dan Pelle / The Spokesman-Review)
James Burr Harrison III, of the Spokane Tribe of Indians Archaeology & Preservation Program holds a guitar pick that was unearthed, July 18, 2016, in Riverfront Park's Gondola Meadow. Archaeological testing is being conducted in the park as part of the redevelopment. (Dan Pelle / The Spokesman-Review)
James Burr Harrison III, of the Spokane Tribe of Indians Archaeology & Preservation Program covers a pile of dirt, July 18, 2016, in Riverfront Park's Gondola Meadow. Archaeological testing is being conducted in the park as part of the redevelopment. (Dan Pelle / The Spokesman-Review)
Jeff Main, of NRC Envirmental Services, comes out of a ditch he dug in Riverfront Park's Gondola Meadow with a plastic circus candy wrapper, July 18, 2016, in downtown Spokane, Wash. Archaeological testing is being conducted in the park as part of the redevelopment. (Dan Pelle / The Spokesman-Review)
A pair of archeologists are sifting through the Riverfront Park ahead of redevelopment construction, looking for remnants of businesses and communities that occupied the park more than a century ago.