rock hounding
or rock·hound·ing
noun
the activity of searching for and collecting rocks, fossils, or minerals.
Origin of rock hounding
An Americanism dating back to 1945–50;
rock hound +
-ing1
Words nearby rock hounding
rock glacier,
rock gunnel,
rock hill,
rock hind,
rock hound,
rock hounding,
rock hyrax,
rock island,
rock jasmine,
rock jock,
rock lobster