South Wales Caving Club - Ogof Ffynnon Ddu - Surveys
Ogof Ffynnon Ddu centerline survey using Survex's Aven.
Click on picture to download OFDCPT.3D
To get the program to run OFDCPT.3D click on the link to the left.
Info from Log file
Survey contains 15052 survey stations,
joined by 15340 shots.
The highest point in the cave was above the Columns at 458.5 m.
It is now an Aven above the high level passages in OFD3 at 477.5m.
and the lowest point is the OFD 1 sump at 184 m. Therefor the depth of the dry cave is 293.5 m.