GPR Test Pit Facility at HARC (Houston Advanced Research Center)
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The initial hole 25' x 21' x 4.5':

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Humans for scale:

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A 6 mil plastic liner lines the the whole pit

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The "origin" of the sand for the pit. A sand sculpture featuring Dr. Seuss characters at The Woodlands Mall, The Woodlands, TX:

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Filling the pit with the sand from the exhibition:

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A very slow process:

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Almost 1/30 Done!:

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