The Holzwarth Historic District comprises a series of cabins built by the Holzwarth family as a guest ranch inholding within the boundaries Rocky Mountain National Park, at Grand Lake, Colorado. The Holzwarths made their homestead in the Kawuneeche Valley in 1917, two years after the establishment of the park, and received a patent on the homestead in 1923. Guest ranch use began in 1919 and continued until the ranch was purchased by The Nature Conservancy in 1974. The property was transferred to the National Park Service in 1975 for incorporation into the park. The district comprises a number of rustic cabins on the Colorado River. Operations existed on both sides of the river, first known as the Holzwarth Trout Ranch and later as the Never Summer Ranch. All but Joe Fleshut's cabin have be