I walked these twin tops, along with Aghla More as a circular route, in early September 2019, parking across the road from the fish farm near Procklis Lough( A (B9360 2580)
).Walking N on the road to the top of the rise I saw a route across open land, but with a farm fence on the right. I started here, keeping close to the fence, which starts to rise.Shortly a gate is reached and crossed. Carry on broadly south across the field, and you will see another gate off to the left. Climb this one and then you can see a broad line of approach from a ridge running left to right (north-south).
There are a couple more low fences and ditches before you have left the fences behind for open hillside.
The best approach is to bear right as you approach the first ridge, to avoid a gulley and stream which is hidden at this point.
As you move up this first rise, Errigal and Lough Altan appear on your right.
The approach to the first top is fairly straightforward, even offering ways to avoid most of the scree and make it easier underfoot on the way to the first top.
There is a large cairn at the summit (564m)from which to enjoy splendid views back over to Muckish and the coastline beyond.The approach to the second top (603m) is simple and clear as Lough Feeane becomes more visible on your right.
From here, the approach to Aghla More is over a mix of bog and peat hags initially as you draw level with the lough. Again there is an old fence which can be crossed to find the best approach to the start of the climb to Aghla More.
As you reach the summit (584m) the views of Errigal's NW face are worth spending a few minutes taking in on a good day.
I descended in a NNW direction as described in the excellent "Walk Guide-West of Ireland". This follows the course of the stream draining Lough Feane . The advice is to then follow the shore of Lough Altan and use the stepping stone crossing at the river outlet at the N end of the lough. However, the crossing on my visit was not possible as the water levels were so high.The only thing for it if you find this situation-as far as I could see- is to follow the fence line north , beside the river and then Procklis Lough. After the lough there is a wall and fence in front of you, but follow the fenceline E and up the rise and it again turns N. After a short walk you will see the stone buildings of the farm you passed on the way to the start point. I managed to cross the wall and fence at this place and walk straight across the field NW to the gate and road with the bridge on your left, leading you back to the parking place.
All in all, a few challenges with fences at the start and finish, but an excellent circuit and a satisfying day in the Donegal mountains, in complete solitude and not even a footprint to be seen. Linkback: mountainviews.ie/summit/336/comment/20658/