Figure 1b. Sulfur pyramids at Fort McMurray. Note the scale bar. Sulfur is also known as brimstone as it can form at the brim of volcanoes. It is a byproduct of refining oil sands.
Originally uploaded in NAGT:Publications:In the Trenches:2018 - Volume 8:In the Trenches - April 2018.
Image 182358 is a 718 by 947 pixel JPEG
Uploaded: Apr10 18