No telling what you might find here.

• On average, you lose 2 to 3 degrees in temperature for every 1,000 feet you gain in elevation.
• The typical backpacker travel 2 MPH on a level surface; for every 1,000 feet of vertical gain, expect to add 1 hour of hiking.
• For the best night vision you need to wait 15 minutes for your pupils to adjust and another 45 for the light sensitive nerve cells in your retinas (called rods) to fully activate.