Station 5. Resurgence
(Porth yr Ogof)
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The resurgence is where the underground river Mellte re-emerges after its 295m journey through the cave.
Google Earth co-ordinates: 51°47’53.34”N 3°33’26.32”W Elevation 247m
SN 92721221
The resurgence can sump (flood to the roof) in anything but the driest of weather and is best avoided.
Photo: Stand slightly downstream of the resurgence (take care as the rock is very slippery!) and take a photo of the resurgence, pointing the camera towards it.
Temperature: First, please make a note of the instrument you use for temperature readings.
A diver's D-Timer or computer is fine.
Tie the instrument to some string and weight it down.
Leave in the river water for 5 minutes and take a reading of the water temperature immediately on removal.
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| Taking water temperature readings from Porth yr Ogof resurgence |
