Plate TectonicsEarth Structure: A Virtual Journey to the Center of Earth

by Anne Egger, Ph.D.

Descend into the crater of Yocul of Sneffels, which the shade of Scartaris caresses, before the kalends of July, audacious traveler, and you will reach the center of the earth. I did it.
Jules Verne,
1828 - 1905