"The remnants of a historic mining camp, where the families of men excavating valuable ores from the steep hills once abided, is at the apex of this loop. Mercury, called quicksilver, drew miners from around the world to the New Almaden Quicksilver Mine. For more than 135 years, from the time of Mexican rule in California to 1976, the rock containing quicksilver, called cinnabar, was extracted from these hills. Used to process gold and silver ore, the mine produced more than eighty three million pounds of mercury during its long history, according to park literature. The loop to English Camp, one of several camps established in the hills during the mine’s long life, follows wide gently graded mining roads through scenic landscapes with great views."