The Thinking, Walking Biped, part seven. Famous nature walks: Alexander von Humboldt and John Muir

Alexander von Humboldt was one of the great travelers of world history. He went all over the world, hiking in mountains everywhere. His spirit of exploration inspired generations of scholars after him, including Charles Darwin who took Humboldt’s book with him and followed his footsteps in South America.

But Humboldt did not just travel and hike. He made scientific observations which would later prove fundamental in the study of geography, particularly plant geography. Lots of people have noticed that trees tend to be found higher on mountain slopes, but Humboldt was the one who discovered that trees were higher on the south-facing than on the north-facing slopes. This is evidence that temperature and humidity are the important factors: the trees prefer the cooler temperatures and more humid conditions of the north slopes. After Humboldt’s detailed observations, the patterns of nature started to make sense.

Perhaps most famously, Humboldt ascended the slopes of the Andean volcano Chimborazo, in Ecuador. Because the top is covered by a glacier, and because of the crevasses, Humboldt could not actually reach the top of Chimborazo. When I climbed up the slope of Chimborazo in 1989—likewise not reaching the top—I felt inspired not just by the amazing geography but by the fact that almost two hundred years earlier, Humboldt had stood in that very spot.

 

It is particularly inspiring to stand in the exact location of an historical event. I have had this experience numerous times, including when I walked on part of the Cherokee Trail of Tears, but also on a remnant of the Native American trails near Tulsa, Oklahoma, and also a World War One graveyard in the Vosges Mountains of Alsace, France. I walked to these places.

The image of John Muir is inseparable from the Sierra Nevada Mountains of California. It seems that he walked practically everywhere in the Sierras, and not just during nice weather the way I did in my Sierra explorations. He would not hesitate to climb a tree during a fierce snowstorm and revel in the forces of the wind. He seemed to need only a blanket for shelter and only bread and tea for nourishment.