Mid or late 1990s as I recall. Some very familiar faces! I wasn't on the filming trip but did lend some equipment - strange to see my helmet worn by someone else, a bit like looking at the back of your own head!
@ Kitt: no SRT is shown; in part 3 around 2.00, Ivor Richards was using a hand jammer for extra grip on the handline. Eleswhere, life lines were used for less experienced members of the party.
The set of four videos chronicle entry into Level Fawr, a look at the area around the Incline, a circular trip into the lower east stopes via the lowermost ladder and the 'Bell Chamber', a look along Mitchell's East Drivage, ascent of the Incline and into the Graig Fawr Stope, ascent of the long handline up the footwall of the Graig Fawr Stope and up a long rubble slope, followed by a further handline to the topmost Graigfawr Stope to see a well-preserved wheelbarrow, descent back down the upper handline and rubble slope, a short laddder up into the northern end of the Roman Level, along the Roman Level Crosscut, and along the Roman Level East Drivage, descent via a short ladder at the mid point of the Roman Level Crosscut into a stope and descent down rubble slopes back to the top of the Incline, and decent of the Incline to Level Fawr.