Hiking Navigation - Determining your Altitude

• Use an Altimeter. Obviously, the best way to be sure is to use an altimeter or a 3D-fix on your GPS Device. Nowadays, altimeters come integrated into wristwatches and other gadgets that combine a whole set of functions. These all-in-one integrated altimeters could be using a mechanism that is far from accurate and very sensitive to changes in air pressure, weather conditions, etc. So make sure to either buy a high quality altimeter or at least know the accuracy you can expect from your altimeter. Many altimeters can only give your altitude with a 50-100 meter allowance.


• Use the Map and Terrain features. If you are able to identify some features of your surroundings and locate them on your map (a hut, cliff, hill shapes, etc.) then by determining your location in respect to these features might help you determine your altitude and location.


• The vegetation on mountains changes as you reach higher altitudes. In general, a mountain has altitude zones that go from leaf-carrying trees to pine trees, bushes, moss, to bare rocks and snow. If you know the altitudes of these boundaries then you will be able to roughly deduct your altitude by knowing your location in respect to these natural boundaries. Of course, this method is far from accurate.


• The vegetation boundaries are largely determined by temperature as temperature decreases as altitude increases. Many local weather forecasts include the temperature at various altitudes. Knowing these temperatures, you should again be able to roughly determine your altitude. Again, this method is far from accurate.

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