An old stone arch tunnel that was once part of the Star Union brewery in Peru has been uncovered after two sinkholes caved in.

The brewery opened in the late 1800s and closed in 1966. Its building is now a distributing company. Peru engineering consultant Roger Chamlin says the tunnels likely date to before Prohibition. He says they were used to move brewery waste to the Illinois River.

Alderman Dave Waldorf told city council members the tunnel collapsed, causing the sinkholes. He says one sinkhole turned into two sinkholes in recent days. Waldorf says the city doesn't know how it will fix the sinkholes yet. The city will try to contact the landowner and meet next week to talk about a solution.