Fast and fiercely continuous spate ditch across a featureless moor. About 1km into the run is a harder slot-like drop, inspect river right: be careful as there are few eddies and little warning. After this the river eases until a weir just before the takeout.
Putin at the layby by the junction of A4086/A498 at the eastern foot of Llanberis Pass. Takeout at the first lake you reach heading towards Capel Curig from the putin.
Rainchasers is best experienced as an app.