“The mountains are calling, and I must go,” John Muir wrote in an 1873 letter to his sister, Sarah.

Writing from Yosemite Valley, the 19th-century naturalist and environmental preservationist had just completed what he says was his longest and hardest trip. Weary, he writes that as soon as he recharges, he is heading out again. One hundred and fifty years later, Muir’s writing has created generations of nature-lovers whose lives are made more meaningful by their intrepid wanderings. And, thanks to a new EV camper trailer from Colorado Teardrops, recharging has never been easier.

Want to embrace the leave-no-trace attitude but worried your EV won’t have enough juice to take you there and back? That’s where the Boulder comes in. Named for Colorado Teardrops’ hometown, the Boulder is a road-ready, four-person camper trailer designed to extend your electric vehicle’s towing range. With a 75-kilowatt-hour battery pack built into its frame, the Boulder is able to recharge the car’s main power source back to its pre-towing range (or further) when parked—so there’s no white knuckling it the next day.

It’s also a cush camping set-up. At 12 feet long, the powder-coated steel teardrop has enough space to sleep two adults and two kids in its fully-insulated, wood-paneled cabin. A queen-size bed and two bunks conveniently convert into a seating and dining area for daytime use, and a cooking station is revealed under the back hatch. The camper unfurls via its gull-wing doors, making it perfectly in sync with today’s EV aesthetic. Add-ons—like patio umbrella mounts, awnings, air conditioning, limited edition colors, and espresso machines—are available to up the experience.

Colorado Teardrops explains that when the Boulder is not in adventure mode, it can provide backup power to your house as well as store solar energy, making 30 percent of the cost eligible for a Residential Clean Energy tax credit under the Inflation Reduction Act—a significant savings, given the camper’s starting price is $67,000. It’s a pretty penny to pay, but in pursuit of petroleum-free travel, the purchase holds considerable value for EV owners. The Boulder is the first of three EV camping trailer models being developed by Colorado Teardrops, and is currently available for pre-order. So yes, to the mountains you must go!

Learn more about Colorado Teardrops here.