At a height of 1,200 feet, the 920 acre Llyn Brenig is recognised as one of the best top water fisheries in the UK.
The most anticipated hatches of the season is the Bibio Marci / Heather Fly which typically hatches during the months of July and August.
This video shows angler Wayne Jones taking to the banks of Llyn Brenig in search of the infamous Heather Fly hatch...