A Hollow Knock

Clack-click! I stepped out from the crevice straight into the damp dirt. Right in front of me sat a giant weathered stone with a deep crack running up its base. Perfect fit! I shoved my hand right into the gap to see how deep it went. Clink! My bony knuckles struck a buried rusty tin can. It rang with a dull, echoing rattle. I tapped it twice more—tap, rattle! A secret hollow beat buried in the grass!