Aren't these the oddest things? I wonder what goes on in the garden at night. These must be the result of the swing-shift crew working deep underground, carrying little balls of compacted soil to the surface, making mini-mountains above ground.
Are they ants? The surface during the day can be completely clear, but when I come out in the morning, there are all these little construction sites dotting the landscape of the garden. There isn't a single design. Some look like mini-volcanoes.
Others favor a cookie shape,
...and still others seem more carelessly created, with a random approach to design.
I'd like to catch them in the act, but when their work begins, mine has ended for the day and I can't seem to remember at that time of the night to take the flashlight out and investigate!
Anyone got a clue?