Northern Hemisphere Late Weichselian glaciation

Couldn't resist sharing this one -- it's one of the best representations I have ever seen of the extent of northern hemisphere glaciation around the time of the Late Weichselain / Wisconsin / Devensian maximum -- c 23,000 - 20,000 years ago.  Click to enlarge.  The white areas show the ice sheets, and the dark blue areas were affected by smaller ice caps and upland glaciation, as in the Alps.

Acknowledgement to Henry Patton et al, 2016.

The build-up, configuration, and dynamical sensitivity of the Eurasian ice-sheet complex to Late Weichselian climatic and oceanic forcing
Henry Patton, Alun Hubbard, Karin Andreassen, Monica Winsborrow, Arjen P. Stroeven
Quaternary Science Reviews 153 (2016) 97e121