Geomorphology and weathering characteristics of erratic boulder trains on Tierra del Fuego, southernmost South America: Implications for dating of glacial deposits - ScienceDirect
Glacial erratic boulders of King County, Washington - Wikipedia
Glacial Erratics: Landscape Boulders or Something More? – Oakland County Blog
The Erratic Boulders — Steemit
Glacial Erratics: Landscape Boulders or Something More? – Oakland County Blog
Glacial Erratics: Awesome Giant Rocks to Visit Around Seattle | ParentMap