Vehicles are seen ascending and descending Mauna Kea in this 30-minute long exposure.
Date: July 5, 2012
Location: Mauna Kea Visitor Information Station (2800 m/9300 ft), Hawaii
Optics: Canon EF 24mm f/1.4L II USM
Camera: Canon EOS 5D Mk III
Exposure: 102 exposures of 20 seconds, f/2.8, ISO 1600