- The volcano ? Chimborazo, its summit being the point on the Earth’s surface that is farthest from the Earth’s center and closest to the sun.
- The scientists ? Alexander von Humboldt and Aimé Bonpland.
- The year ? 1802, in the middle of their 5-year American expedition.
- The country ? Ecuador, in the Cordillera Occidental range of the Andes.