Eden's first hide.
"One day it will be a giant oak,
To shield me from the sun a sheltering cloak."
"It will shelter those caught in a fine summers rain,
Under its leafy bows joy will be again.
Creatures of the wilds will claim it for their own,
Squirrels will reside here in their own home.
Birds will build nests and raise their young,
They will sing melodies a chorus well sung.
Under it’s branches grass will grow,
Here and there a wild flower it’s head will show."
An easy micro-cache, with a vaguely geological feel.
A pair of tweezers may help with extraction of the logbook.