 Harrison also built two cabins , named " Wetumka " and " Osocosy " , on the west side of Pine Creek , just north of the mouth of Fourmile Run . Sometime after 1903 , former Pennsylvania Governor William A. Stone built a cabin named " Heart 's @-@ ease " just south of the mouth of Fourmile Run . In 1966 these cabins were still standing and were three of " only four man @-@ made structures inside the canyon proper " , but by 1993 only Stone 's cabin and one of Harrison 's cabins remained . As of 2004 , these properties were still owned by the Stone family , and are part of a small parcel of private land within the park . 
