The extraction process to remove the lead from the sulfur is very simple, thus lead has been extracted from Galena since the earliest times.Galena from certain regions is rich in silver, and some specimens may contain as much as 20 percent silver. Because of this, silver-rich Galena is also an ore of silver.
Research shows that hiking has a positive impact on combating the symptoms of stress and anxiety, says Gregory A. Miller, PhD, president of the American Hiking Society. Being in nature is ingrained in our DNA, and we sometimes forget that.
Hiking at altitudes higher than 6,000 feet (1,828.8 m) is more difficult than hiking at low altitudes. The decreased oxygen supply at high altitudes causes the body to work less efficiently. Preparing yourself to hike in high altitudes is critical for your safety and performance.