As long as there are a few left in the cache container, feel free to take a shell or two for your own collection!
During the great quarantine clean of 2020, I discovered my rock collection, assembled over years of studying geology in college and just picking up cool rocks along the way. Having way more rocks than we knew what to do with, we thought it would be fun to share them with fellow geocachers in a new series along the Merrimack River: the rock collection! These 15 caches are hidden in a linear fashion along a portion of the Bay Circuit Trail which can be walked or biked, across AVIS's Deer Jump Reservation (and a couple other reservations as well). The containers vary in size, but each should be an easy find. Each one highlights a different really cool rock. Tradeables may not be left in these caches, though if you collect rocks yourself you can keep a rock from some (but not all) of these caches. Coordinates for a possible trailhead are provided, though there are many places you could begin your hike.
Florida Shells
These shells were collected on Fort Meyer's beach in Florida over many many years of family vacations. Are seashells rocks? Coquina is a kind of rock made entirely and exclusively of seashells. And seashells are made of calcium carbonate- the same thing that composes limestone. There are many beautiful shells in here- feel free to take a few!
