New York Times article about
Mapping rocks under Swiss glaciersIf you can't get there because of the paywall, I'll try again.
This link may work better for those who don't subscribe; I got the "gift this article" feature to give me a link.
Thanks! That was an interesting article, even if they skipped noting that they use OCAD for all those map updates. I'm guessing it is OCAD that has replaced the manual screen drawing with a randomized hatch pattern.