Mount Washington was first climbed in 1642, but there was little activity there until the middle of the 19th century when it was developed as one of the first intentional tourist destinations in the country with the construction of the Tip Top Hotel, which is still standing and recently renovated, and an auto road and the Mount Washington Cog Railway (1869) to the top.

Mount Washington literally has some of the worst weather in the world, as it holds the wind speed record at 231 mph (372 kph), recorded in 1934 and regular winter temperatures of 47 degrees below zero Fahrenheit (44 below Celsius). Buildings there are designed to withstand 300 mph (482 kph) winds. Many are chained directly to the mountain. In addition to a number of broadcast towers, the mountain is the site of a non-profit scientific observatory reporting the weather as well as other aspects of the sub-arctic climate of the mountain.

The mountain is a popular hiking and recreational area, including Tuckerman Ravine, famous for its Fourth of July skiing and its 45-degree slopes, and notorious for its avalanches. It is the only mountain east of the Mississippi that has avalanches. About 100 are recorded every year and since 1849 more than 130 people have died in slides.

Numerous hikers have been lost on the mountain due to the difficulty of judging the weather on the mountain from down below. Hikers on the Appalachian trail visit the summit while on their way to and from Mt. Katahdin

External Links

• Mount Washington web page
• Mount Washington weather station
• Mount Washington cog railway, the only railway in the world built entirely on trestles, 3.1 miles (5.2 km).

Table of contents 1 If a natural water source is available
2 If a natural water source is not available
2.1 The evaporation still
2.2 The vegetation still

If a natural water source is available

• Water may be boiled over a campfire or portable stove. At high altitudes, water boils at a lower temperature, so the boil must be maintained for several minutes to kill the microorganisms.
• Water may be filtered with a portable water purification device. Water purifiers differ widely, so if you own one, familiarize yourself with the instruction manual. If the water is visibly dirty, pour it through a cloth to remove large particles and avoid prematurely clogging the purifier.
• Certain chemicals, such as dilute chlorine solution, are commercially sold as antimicrobial additives. Some leave an unpleasant flavor that may be masked with powdered drink mix.

Probably the best way to get water from the ground is the evaporation still, shown in cross-section in the diagram at right. To build an evaporation still, you need only four items: a shovel, a sturdy sheet of transparent plastic, a cup, and a piece of flexible plastic tubing long enough to reach from the middle of the plastic sheet to the side with some excess length.

Begin by digging a hole with sloping sides in the shape of the sheet of plastic, but slightly smaller. Avoid digging in hot weather, as you will lose considerable amounts of water through sweat. Sink the cup in the middle of the hole so that the rim is almost flush with the sides of the hole. Place one end of the tube in the cup, run the other end to the outside of the hole, and place the sheet of plastic over the whole assembly. Weigh down the sides of the plastic sheet, or anchor them with stakes, and place a small weight directly over the cup.

The evaporation still will produce water continuously. The plastic sheet will create a greenhouse effect in the still, accelerating the natural evaporation of water from the soil. When the water vapor hits the plastic sheet, it will condense and drip down into the cup. The tubing may be used to drink from the cup without disturbing the still. For added effectiveness, use a second cup to pour any available fluids, such as urine, into the pit.

The vegetation still

The water in the bag will pick up chemicals from the leaves. These will give it a strong leafy flavor, and may include toxins, so make sure not to gather any poisonous plants.