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[lithicbeads]

These are slightly altered, thus not black.  And they range in this photo from 20 to 30 mm.  The dimples are from where one sphere grew into another without affixing itself.  2.5 mm hole

[Felicia]

Wow. Fascinating mineral growth there. Do you know the matrix material the nodules grew in, or the growth process? Not only interesting stuff, but nature's beads, I guess.🐱

[lithicbeads]

It is all basalt.

[Phishisgroovin]

i see stuff like this between Bow hill and bellingham heading south on I-5, atleast at 60 MPH it looks like it. Always wanted to stop and find one of the round rocks that fell from the bubble holes in the stone wall.

[lithicbeads]

That is Chuckanut sandstone and the holes are quite common but they are erosional features , nothing unfortunately came out of them. If you visit the park area along Bellingham Bay called Teddy Bear Coves there are lots of those features at waters edge. I think the winter tides are too high to visit that spot but it is a pretty area that is easy access 8 months a year. If you visit and have to cross the train tracks be incredibly careful as lots of people have been killed along that stretch of track, it's death rate is like that of Golden Gardens.

[qtz2010]

Unusual formation.