High atop cascading waterfalls and deep within the lush green depths of the valleys, Swiss photographer Ruedi Homberger has for more than twenty years captured in photographs the majestic beauty of eastern Alaska's Wrangell Mountain range. In addition to summiting some of the Wrangells' loftiest peaks, Homberger has in recent years incorporated a technically challenging new approach into his work. Flying above the mountains in a small plane, Homberger...