This map is geo-referencedPahvant Valley Heritage Trail Mileage Between Points

Area of Critical Environmental Concern

State Wildlife Reserve/Manage ent Area

Forest Service

BLM Field Office

Scenic Geology

P.etroglyr:,h Site

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, _,, _Lt:;l"';~~ated along the roadside just before the ( -,c·f"'' - parking area 1s the Great Stone Face "'*,-r //>,__ _ Petroglyphs site. The meaning of these

.I <'~--,.,._ writings 1s unknown , but some authorities 1' think these symbols were an agreement

dividing water and hunting rights among the Indians of the lower Sevier River area

of Mormon pioneer history and is the only remaining example of the ) ~maoy adobe forts b"III~ T--:.

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This natural geologic fe~ture i~-:aid / I to look like images of Mormon I prophet Joseph Smith. A steep, ;----------1

rocky trail takes you closer to this natural formation also known as the "Guardian of Deseret".

Collect sunstones (transparent yellowish labradorile crystals) on the flats surrounding the knoll.

sand

Locate the Hole-in-the-Rock BLM sign to the East of the main road and park. Near this sign is a passage through a fence. Walk along the fence and climb around the basalt boulders to find the petroglyphs.

(Feature located to the north.) About 15,500 years ago, a volcano explosively erupted from the bottom of the rising Ice Age Lake Bonneville. Pahvanl Butte (also known as Sugarloaf) ejected shreds of basalt lava high into the air that quickly cooled into glassy particles the size of sand (volcan ic ash) and gravel (volcanic cinders) collectively known as tuff. The explosion produced a crater on the south face of Pahvant Butte. During the eruption the wind must have been blowing to the northeast; black volcanic ash from the eruption is found in sand dunes northeast of Pahvant Butte. When the eruption ceased , a volcanic cone called a luff cone was left to the mercy of erosion by Lake Bonneville

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Wha10s an .A.C EC?

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After the volcanic eruption that formed Pahvant Butte. Lake Bonneville carved a shelf around most of the butte except for the north face where intense storm waves cut a vertical cliff into the cone. The cut exposes an intricate lacey pattern caused by the partial cementing of the luff by minerals in ground water. The cliff is known as the "Lace Curtain" because of its while color and mysterious lacey pattern.

AC EC\ciesignations highlight areas where special managemen t a ttent idri._ is needed to pro tect. and prevent irrnparable damage to important historica l. cultural. and scenic values. fish, or wildl ife ~sources or o ther natural systems or p rocesses; or to p ro tect hurrl\n life and safety from natural hazards.

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BLM Fillmore Field Office J 95 E. 500 N. Fillmore, UT J 435-7843-3100

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Hundreds of rock art panels on a long basalt outcrop. Explore and enjoy, but please be respectful of these fragile traces of our heritage Climbing on or touching the rock art can irrevocably damage images that have survived thousands of years.

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