Ground Truth Trekking

Exploring ice caves

Erin and Lituya explore caves in the front of Grewingk Glacier. Why are glaciers blue? It turns out the answer is very simple: Ice is blue. We think of it as clear or white because we encounter it when it's thin so the blue color is hard to see, or when it has bubbles or other surfaces that reflect white light, creating that snowy whiteness. But if you have enough ice, with few enough bubbles, then you can really see that blue color come through.

Download this image

Right-click on the size you want, and select "save link as..."

Image SizeFilesize
300 px20.0 KB
600 px61.8 KB
750 px90.0 KB
1600 px160.2 KB
Original11.2 MB

Embed this image

1) Select a size:

2) Cut and paste:

Creative Commons Attribution Non-Commercial

Attribution and Copyright info

By Ground Truth Trekking

Content on this page is available under a Creative Commons Attribution Non-Commercial license. For commercial uses please contact us.