The Great Pyramids of the Great Salt Lake County: Part One — Unearthing Ancient Mysteries in Utah’s Mountain Ranges
<p>When the first pioneers arrived in Salt Lake, after walking across the country with their belongings, within days, they all swam and relaxed at Black Rock on the Great Salt Lake’s southern shore. Hundreds of feet above is the ~20,000 year old Bonneville shoreline of a once ~20,000 square mile freshwater lake. Just under the flat, ubiquitous terrace, they found some very interesting caves known as The Black Rock Caves.</p>
<p><img alt="" src="https://miro.medium.com/v2/resize:fit:630/1*1MIj86rj_8tHmge25f9pxQ.png" style="height:407px; width:700px" /></p>
<p>Plate 4 a. View of Great Salt Lake from above Black Rock Cave showing Travertine deposit on rocks. &, Mouth of Black Rock Cave, c, Cross section of upper end of trench A, Black Rock Cave, d, Interior of Black Rock Cave before excavation.</p>
<p>Thick, parallel walls of stone appear conducive sometimes to square and boxy, wave-cut caves. According to David Madsen’s 1983 study, one chamber has a vaulted ceiling and Black Rock Cave itself is a remarkable 315 foot rectangle corridor.</p>
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