Weblarcombe’s new book, “historic tales of flathead lake,” is a collection of these stories, including the flathead lake monster, the blowing up of medicine rock, the journey of the grizzly bear that swam the lake, wild horse island’s history and more. Webpilot of the nekton gamma, hank pronk, gets his safety buoy ready before he leaves the dock for a dive in flathead lake in northwestern montana.