Mont Blanc massif led to calls to limit access to the most popular summits and for the mountains to be treated with greater respect. The Mont Blanc massif has provided numerous opportunities for academic research, dating back to the very first ascent of Mont Blanc in 1786 during which Michel Paccard carried scientific equipment to confirm it as the highest summit. In 1820, an ill-fated expedition led by Dr Hamel included pigeons intended for release at varying altitudes to measure the impact of reduced air density on their ability to fly. In 1890, Joseph Vallot built a small meteorological observatory at approximately between
Waterman Mountain first non-indigenous woman known to have crossed the San Gabriel Mountains. It is said that she placed a cairn on this summit and so it was named Lady Waterman's Peak. However, with prevailing attitudes toward the "weaker sex" the name was not accepted and it became known as simply Waterman Mountain. The area was severely impacted by the Station fire in 2009. Waterman Mountain Waterman Mountain, at , is a prominent peak in the San Gabriel Mountains of Los Angeles County, California, within the Angeles National Forest and San Gabriel Mountains National Monument. The summit of Waterman Mountain marks the