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geology, geology, road cut, caution, sign, rocks, humor, funny
geology, science, caution, humor, funny, hammer, stand, back, going, try
geology, sign, rocks, science, humor, funny, graffiti, caution
mount st helens, volcano, moon, landscape, fall, beautiful, toutle river, valley, mountain, serene
waterfall, waterfalls, beach, ocean, schitts creek, nature, geology, oregon, hug point, seascape, water, sandstone, serene, beautiful
mount st helens, volcano, johnston ridge, washington, geology, eruption, nature, landscape
Confirmed adorer of the good science of rock-breaking. Writes at blogs.scientificamerican.com/rosetta-stones and the-orbit.net/unconformity/.