That logo/inlay is inspired by a road sign I saw when traveling in Iceland in 2008. There's a lake there said to contain the Lagarfljót Worm, also known as the Icelandic Worm Monster - a creature similar to the Loch Ness Monster. While driving around Lagarfljót lake in Egilsstaðir I noticed these signs which I think were meant to indicate good vantage points for viewing the worm. Unfortunately I didn't see the Lagarfljót monster but I did come away with a cool symbol!
|Worm road sign, Lagarfljót Lake, Egilsstaðir Iceland|
I'm looking forward to playing this "Worm" banjo!