Chimborazo
The summit of Mount Everest is higher above sea level, but the summit of Chimborazo is widely reported to be the farthest point on the surface from Earth's center, with Huascarán a very close second. The summit of the Chimborazo is the fixed point on Earth that has the utmost distance from the center – because of the oblate spheroid shape of the planet Earth, which is "thicker" around the Equator than measured around the poles. Chimborazo is one degree south of the Equator and the Earth's diameter at the Equator is greater than at the latitude of Everest ( above sea level), nearly 27.6° north, with sea level also elevated. Despite being lower in elevation above sea level, it is from the Earth's center, farther than the summit of Everest ( from the Earth's center). However, by height above sea level, Chimborazo is not the highest peak of the Andes.
Kenneth Sims (geologist)
Sims conducted numerous expeditions into the Ecuadorian volcanoes. Funded by the National Geographic Society in 2014, Sims led a month-long expedition into the remote Sangay volcano (5,300 meters/17,400 feet ASL), which is one of the highest and most continuously active volcanoes in the world. In 2016, while living in Ecuador for six months on a US Fulbright Scholarship, Sims conducted several two-week expeditions to collect samples on the steep, glacially dissected flanks and high-altitude ridges of Chimborazo (6,263 meters/20,548 feet ASL). Sims has also conducted and published NSF- and UW-funded research on the volcanoes Reventador, Sumaco, and the Chalupas Caldera.