This 1998 edition of a Mystery Flesh Pit National Park Trail Map was first published in 1981. Early
This 1998 edition ofa Mystery Flesh Pit National Park Trail Map was first published in1981. Early trail maps were compiled from hundreds ofindividual surveys and measurements by spelunkers, explorers andeventually park engineers to form a more comprehensive picture of theMystery Flesh Pit’s internal anatomy. With the addition of lightedand air-conditioned reinforced tunnels in the late 1970s, the parkbecame more accessible to visitors than ever, necessitating the needfor a concise, easy-to-read map familiar to any National Parkvisitor. -- source link
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