principia-web placeholder screenshot

This is the original level that the greyscale "No Thumbnail" image for principia-web is based on. For some time I thought this level was lost, but I found it again somewhere so uploading it before it falls out of my hands again.

The link to the placeholder image that principia-web uses for levels that don't have a screenshot is here. The unedited image that I originally screenshotted can be found here on my public file dump.