A nervous-looking Ross of Mull granite boulder near Fionnphort this morning 
Boulders like this were left when this bit of west Mull was deglaciated about 17.5 thousand years ago.
More on deglaciation dates for western Scotland in this open access paper here: https://doi.org/10.1016/j.quascirev.2017.04.021
La Pierre-à-bot : 'a celebrity glacial erratic in the Swiss Jura and the 'Glacial Theory' in Britain' [pdf 11pp] #Pierreabot #GlacialErratic #megalithic https://www.researchgate.net/profile/P-Worsley/publication/385590680_La_Pierre-a-bot_a_celebrity_glacial_erratic_in_the_Swiss_Jura_and_the_'Glacial_Theory'_in_Britain/links/672ba75477b63d1220dffd06/La-Pierre-a-bot-a-celebrity-glacial-erratic-in-the-Swiss-Jura-and-the-Glacial-Theory-in-Britain.pdf
