Use arrow keys to navigate between parks. Press Enter or Space to view fullscreen. Press Escape to exit fullscreen. Press T to toggle park name overlays. Press C to toggle countdown timers. In fullscreen, use Left and Right arrows to browse parks.

National Parks

A real-time mosaic of light crossing America, captured through National Park Service air quality webcams as twilight sweeps from coast to coast

Keyboard Controls

  • Arrow KeysNavigate grid
  • Enter / SpaceView fullscreen
  • EscapeExit fullscreen / Close menu
  • Left / RightBrowse parks (fullscreen)
  • TToggle text overlays
  • CToggle countdown timers
  • H / IShow this menu

Touch Controls

  • TapView fullscreen / Exit
  • Swipe L/RBrowse parks (fullscreen)
  • Swipe L/RToggle text overlays (grid)