Mountain biking at sunset in California.

sunset evening dusk sunrise morning dawn alpenglow sunny sunburst sun starburst sky skies summer season two sportswoman people outdoorsman couple caucasian outside outdoors outdoor liesure free time horizontal physical healthy health fitness exercise fresh air freedom free exploring explorer explore orange blue colour color black challenging challenge mountain biking mountain bike cycling biking silhouette backlit backlight backcountry usa united states tahoe donner summit california ca american america adventuring adventures adventure activity activities active outdoors two people