(The editors at the CIDU site do not have access to the former “Arlo Pages” site at https://arlopage.wordpress.com/ — but please do see Bill’s note on the front page there.)
Now for a CIDU: This confusing Lay Lines was spotted and discussed in email by our own Zbicyclist:

What zbicyclist points to as making this hard to understand is contradictory clues as to whether she’s digging a new hole, starting (as one does) from the top; or emerging from the earth by digging her way out, using a shovel she perhaps was buried with? Or maybe she’s tunnelling out of a prison?
(Why relegated to an Arlo Page? Not at all patently offensive, but potentially NSFW — she’s fully nude, and no areas completely hidden, even though tasteful and “artistic”.)
If she has magical powers (as shown in the final panel), the why did she need a shovel to do the digging? Or is that the whole point of the strip?
P.S. It’s really nice to see a “Lay Lines” that doesn’t have any irritating twits in it.
Might it perhaps be a reference to a woman’s monthly cycle?
Targuman, you bet! I knew immediately it was one of those “time of the moon” stories.
Been so many years now – the thought did not even come to me.