Mollusk in the sand.
My favorite of the most damaged images of rocks and erosion at the beach.
I also have an August Break picture to add:
Soft tumbled beach rocks.
Expired film is really fun to experiment with. I've used other rolls with dates starting from 2005-2006, but I haven't used older so I don't really know how the effects change images. A lot also depends on how well the film was taken care of over the past 5 or more years because sun and heat can do a lot of damage. But, if you have expired film, I say go for it! It's a lot of fun in not knowing how your images will turn out, if at all.