Salt City Underground

Gateway Arch - 620'

St. Louis, Mo

Washington Monument - 555'

Washington DC

Tallest Redwood - 379'

Redwood National Park, California

Statue of Liberty - 305'

New York, NY

Gemini Titian II Rocket - 109'

Cosmosphere, Hutchinson, KS

Sandy Soil - 78'

Rock Layer - 385'

Salt - 325'

Salt Mine - 650'