This was really weird. Arriving at the weir turned out not to be enough. We had to go a bit further, which got as almost wet feet. But we found a dry way. After doing the heavy computations, we refrained from further bush bashing because MBO already knew the trick. So back to the track, and up we went until we arrived at GZ. Unfortunately, the box was a bit wet inside. We cleaned it up and signed the wet but still usable logbook. All in all, these weirs are addictive.
Thanks to Tankengine
Fogg & Consortin