As of 13 August 2005, the main trail from the cave entrance to the start of the 200 foot crawl has been defined with a new white nylon cord. The marking replaces the nylon string that had worn out over the past 24 years. Tail marking and been relatively successful in protecting pristine areas and other parts of the cave considered at risk from unintentional damage from cavers.
The cord is mainly used to mark the primary routes in Perkins Cave and show the acceptable pathways.
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| Bill James and Joel Stevenson place the trail marking cord in the passage between the First Discovery room and the toothpaste crawl. | The canvas pack that was used to carry ten spools of nylon cord into the cave on a previous trail marking project in May 2005 provided nutrients for some mold spores. The pack on the right is the same type; however, it just arrived in the cave so it has no mold. The moldy pack was left in the cave by mistake. They were both removed during this trip. |
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| First Discovery room |