Geomorphology and weathering characteristics of erratic boulder trains on Tierra del Fuego, southernmost South America: Implications for dating of glacial deposits - ScienceDirect
Glacial Erratics (U.S. National Park Service)
Glacial erratic - Wikipedia
Glacial erratic - Wikiwand
The Selected Erratic Boulders in the Świętokrzyskie Province (Central Poland) and Their Potential to Promote Geotourism | SpringerLink