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
Louis Gabriel Deniéport Louis Gabriel Deniéport Louis Gabriel Deniéport (14 April 1765, Dieppe – 20 October 1805) was a French naval captain who fought in several battles, most notably Trafalgar, at which he was killed commanding the "Achille". Born to hotelier parents on rue de l'oranger in Dieppe, his godfather was Nicolas Boiloy, a businessman in the Saint-Remy parish, and his godmother was the widow Michel Martel, a businesswoman in the parish of Saint-Jacques. Like his brother Jean-Vincent Deniéport, Louis was a brilliant student at the Oratorian school and won the general prize in 1785, though he had to enter the Oratorian house