..........interesting facts Leg 1 Start at Rhymney Comprehensive School SO 121 060 toCheckpoint 1,Visitor Centre, Parc Cwm Darran SO 113 034. Ponlottyn developed in the early 19th century as people moved into the area from rural Wales and Ireland to work in local iron works and the coal mines. It’s also the birthplace of Edward Chapman who won the Victoria Cross in Germany in April 1945. Parc Cwm Darran has been developed on the site of Ogilvie Colliery which closed in 1975. In 1973 the colliery was used to film ‘Dr Who and the Green Death ‘starring Jon Pertwee. Leg 2 Checkpoint 1 Visitor Centre, Parc Cwm Darran to Checkpoint 2 SO 138 003 Common Land is a relic of the medieval period, it is privately owned but local farmers have the right to use it for such things as grazing livestock and cutting braken. The general public only have rights of access. Gelligaer and Merthyr Common is the largest common in Caerphilly County Borough and has rich historic heritage. On the Common there are Bronze Age burial mounds, Roman Roads and Roman practice marching camps, the site of a 6th century church at Capel Gwladys and the sites of Medieval farmhouses (platform houses). Gelligaer Common has been used several times as a location for episodes of the current Dr Who series. Leg 4 Checkpoint 3 SO 128 037 to Finish at Rhymney Comprehensive School SO 121 060 The scree slope and uneven ground here is the result of a landslip. This resulted in the hamlet of Troedrhiwfuch with its school, church and pub being demolished in the 1980’s with only two properties now remaining. If you look across the valley you will see what looks like a quarry. This is the result of another landslip which took place in the 1929 and destroyed the New Tredegar Colliery. Ground movement is still continuing and this year the road between New Tredegar and Pontlottyn has been closed to allow repair work to take place.There are similar areas of instability to the east at Troedrhiwgwair in the Sirhowy Valley and Cwm and Blaina in the Ebbw Fawr and Fach valleys. This instability is the result of past glaciation. If the wind is from the west or north west you may well see hang gliders on the mountain above Abertysswg.
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