Mendip Cave Rescue were called by Wiltshire Police at 00:40 on Monday 11th September 2017 for an incident at Monkton Farleigh stone mine. A party of two people had entered the mine at around 20:00 the previous evening and were very overdue for their callout. MCR contacted four local cavers, who assembled at the mine entrance at 01:25, and two of these conducted a sweep search of the main passageways within the mine whilst the other two provided surface support and coordination with the emergency services. At 02:00 the missing party safely arrived at the surface, having enjoyed a much longer trip than they had planned. By 02:45 the underground search party also arrived back at the surface and the stand down message was then sent to the MCR wardens to bring the incident to a close at 03:05.