Following a fatal accident, 2nd December 1878, a simple operation to prevent runaway trains was devised at this halt half way down the 7 mile bank. A siding was constructed to allow any out of control train to be diverted up a steep gradient thus halting its progress. Three “crows “ on the whistle meant all was well but a prolonged blast demanded diversion. The halt also meant that farmers’ wives in the valley could transport their produce more readily to the highly populated industrial Dowlais and Merthyr areas. The site is now a Royal Navy Outdoor Training Facility.