Tarentum firefighters block off the 400 block of Corbet Street after a section of the former Tarentum Opera House collapsed Wednesday. (Louis B. Ruediger | TribLive)
Cindy Homburg didn’t want to believe her eyes while looking at the old Tarentum Opera House late Wednesday evening.
The borough historian and president of The Tarentum Book Club saw a gaping hole on the side of the third floor of the red brick building at 411 Corbet St…