Complex sentence: It has been speculated that Miner left a hidden cache of loot in the forests south of Silverdale after the first robbery and local historians believe he used these monies to fund his escape, while others surmise that today there is still hidden loot to be found there.
Split into simpler sentences: It has been speculated that Miner left a hidden cache of loot in the forests south of Silverdale after the first robbery. Some believe he used these funds to fund his escape, while others surmise that there is still hidden loot to be found there.