Refers to headwaters of an unnamed creek which feeds from the west into Deanes Creek 1.4km south west of the junction of Deanes Creek and Constance Gorge. The Pentafid is the junction of five tributaries. So named by Michael Keats, 25th November 2009, Michael applying the botanica lname for "cleft into five". Walking access from Glowworm Tunnel Road and Old Coach Road.