A U.S. Air Force combat rescue officer assigned to the 83rd Expeditionary Rescue Squadron, Bagram Airfield, Afghanistan… https://www.rawpixel.com/image/8741289/photo-image-medicine-public-domain-mountainsFree Image from public domain licenseMountaineer trekking in a cold night at Liathach Ridge, Scotland https://www.rawpixel.com/image/2221638/night-time-hike-the-snowView licenseA man returns late at night and removes his shoes before climbing the stairs and his wife is waiting for his return. Etching… https://www.rawpixel.com/image/13980328/image-cartoon-person-artFree Image from public domain licenseWinter at Yosemite National Park, United States https://www.rawpixel.com/image/430183/free-photo-image-adventure-american-californiaView licenseMountaineers trekking in the cold night at Liathach Ridge, Scotland https://www.rawpixel.com/image/2221515/night-time-hike-the-snowView licenseView of mountains in Yosemite National Park, California https://www.rawpixel.com/image/430177/free-photo-image-yosemite-adventure-americanView licenseMountaineer trekking in a cold night at Liathach Ridge, Scotland https://www.rawpixel.com/image/2221501/night-time-hike-the-snowView licenseMountaineer trekking in a cold night at Liathach Ridge, Scotland https://www.rawpixel.com/image/2221550/night-time-hike-the-snowView licenseA child climbs a rock wall during the 33rd annual National Night Out at the McGlachlin Parade Field on Fort Meade, Md., Aug.… https://www.rawpixel.com/image/8739607/photo-image-public-domain-people-childFree Image from public domain licenseView of mountains in Yosemite National Park, California https://www.rawpixel.com/image/430181/free-photo-image-adventure-american-californiaView license