The initial announcement over at The Wrap describes the story this way:
Pressman's other recent credits include remakes of The Crow and Bloodsport, so while he's an indie producer he's also one very much accustomed to working at a high level. Which means we should expect some solid cast here."The Crawlers" is set in the late 1960s and follows a young government land-surveyor as he wanders off course into Boyle, Texas. After interacting with some of the strange, secretive residents, he follows a trail of disturbing rumors and unearths the town's terrifying history, discovering that the townspeople aren't the only residents of Boyle.