When was the last time you planned a backpacking trip without a computer, phone, or GPS unit? Think hard. Unless you're a dedicated old-schooler, it probably wasn't recently. If your map skills are ...

Topographic maps, also called contour maps, topo maps or topo quads, are maps that show topography, or land contours, by means of contour lines. Contour lines are curves that connect contiguous points ...

Add Yahoo as a preferred source to see more of our stories on Google. When was the last time you planned a backpacking trip without a computer, phone, or GPS unit? Think hard. Unless you're a ...