Complex sentence: Although Dallas and the Cole Box gang were eventually gunned down by Proemsey and Quick Draw their loot was long believed to be hidden beneath what is now Pure Pleasure Adult Superstore in Herculaneum.
Split into simpler sentences: Although Dallas and the Cole Box gang were eventually gunned down by Proemsey and Quick Draw. Their loot was long believed to be hidden beneath what is now Pure Pleasure Adult Superstore in Herculaneum.