Activities and results from the OBA Leucophor water tracing test carried out from downstream Cueva Vallina at Easter 2015.
1: The three positive detectors from Comellante, with the negative detector from Cueva del Molino (site 791)
2: Checking a detector. 3: Pete Smith in the Comellante resurgence.
4 - 7: The resurgence during the test period. (photos: Phil Papard)