taken 6 years ago, near to Senghenydd, Caerphilly/Caerffili, Wales
Confluence, Nant Cwm-parc
Two underground streams emerge from culverts to form the Nant Cwm-parc which then passes under the road. Note the absence of leaves compared to late April in 2012 ST1191 : Stream issues from a culvert (1), Senghenydd.