NEDERLAND — In a stroll around the beeping backhoes and hustle of the Eldora Mountain base area, manager Brent Tregaskis animates $10 million of investment over the summer using primarily four words: local, craft, Boulder and — with all the old barn wood — cabiny. Anchored by a $6 million, sunset-orange Doppelmayr six-pack chairlift, a revamped menu based on locally sourced food and a sweeping rebrand that returns the 55-year-old ski area to its roots as Boulder’s backyard hill, Eldora is taking a craft-beer approach to skiing with its largest one-time investment in decades. “This is all about making Eldora the best version of itself and that’s a really cool ski area for locals,” says resort industry veteran Tregaskis. In a ski resort industry soon to feature clashing titans, the back-to-basics, craft-but-not-small approach at Eldora exemplifies the new strategy of owner Powdr Corp., which is carving a niche that appeals to skiers drawn to their own local hill over the corporate, homogenized experiences.