The closest I have gotten to the Aghlas to date is to observe them from Mackoght and Errigal. When I do get to walk that way I will be having another good look at Patrick Zerkowski's YouTube film "Aghla Mor and Aghla Beag" which is a very nicely put together piece. I think that serious walkers will much appreciate the fact that Patrick constantly identifies the mountains and lakes by naming them onscreen. This means that you get a really good look at what you will encounter on your route. Yes work on your maps, and read the wise words of those who have gone before. But don't forget that a picture paints a thousand words.
Patrick manages to show Errigal as a looming giant as he leaves Mackoght for the Aghlas. He comments:
"The biggest problem in this walk was for me crossing boggy wetland between Lough Altan and Mount Errigal. On my way back I had a plan to climb Errigal at the end of that walk but I lost too much power and a lot of time too crossing that boggy wet land and was too late. "
Now Patrick is a top class walker so believe what he says about those bogs!

https://www.youtube.com/watch?v=Tmi1Ukel3GU&list=UUkdf1aBNXgCbRVmMfJkJllw Linkback: https://mountainviews.ie/summit/336/comment/17745/

This view of the Aghlas is on the walk from Muckish to Errigal. After passing Crocnalaragagh, this daunting climb will come into view. The twin peaks of Aghla Beg (on the right) and Aghla Beg south. Linkback: https://mountainviews.ie/summit/336/comment/14950/

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( B9360 2580 A ).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: https://mountainviews.ie/summit/336/comment/20658/

Climbed June 11th – A Mid Ulster Walking Club walk starting at Altderry Bridge IB96335 28155 (122m) –Entering Falcaragh from Dunfanaghy take a left turn at crossroads in centre of village. Follow narrow country road for about 4K. Room for one or two cars at side of road without blocking entrance to tracks either side of road. Muckish lies to the left of the road, Aghla Beg’s twin peaks to the right with Crocknalaragagh straight ahead. Probably possible to take track on right just past bridge but we walked back up the road (towards Falcarragh) for about 50m and took track to left, which on the day was dry and firm but with evidence that it could be quite muddy in parts in more inclement conditions. Follow track until its natural end at makeshift bridge over stream IB96618 26480 (204m). Cross fence and follow next fence up hill towards Aghla Beg’s north-eastern spur. Cross to right side of fence at your convenience. We waited until we had passed the stretch of heather on the right before doing so. Climb to height passing Loch Moilt which lies a little further to right under Aghla Beg’s extremely steep shale covered northern summit. Upon reaching height Lough Alurig comes into view immediately below. Turn right and ascend steeply up spine emerging on broad flat col. Strong but fairly warm south-westerly winds buffeted us as we dropped our packs at fence posts and took short climb to smaller northern summit. GPS reading here was IB 96154 25300 B (565m). Among the many great views Muckish dominates to east, Aghla Beg’s higher southern summit naturally limits views to south, Drumnaliffernan, Slieve Snaght etc are to SW, while to the west Errigal can be seen rising above and behind Aghla More, finally Tory Island is clearly visible to the north. Linkback: https://mountainviews.ie/summit/336/comment/2396/

Easy walk up along the forest tracks, then up through a firebreak onto the side of the east summit. Park at the forest entrance (1k east of Muckish gap, lots of forestry working signs) and then take the second right off the main track. About 1k later cut up through the firebreak. This is a commercial plantation, so this route has to be avoided when felling is in operation. A map would obviously be a great help, as the trees make navigation difficult and the forest tracks are marked on it! If this route is not possible, you can park at the Muckish gap and head straight for the target over Crocknalaragagh. Great views to Tory island. Nothing much for the sheep up here, but they're still about! Linkback: https://mountainviews.ie/summit/336/comment/696/

As Denise points out in her contribution on Aghla Beg (South), it is the cairn on Aghla Beg which is the largest in the area - larger than that on Aghla More and much larger than Aghla Beg (South), which is the highest peak in the group, though it has no name in its own right (the name Ardloughnabrackbaddy appears to apply properly to the lower 473m peak SW of Nabrackbaddy Lough). Perhaps this shows that absolute height was of less interest than other factors such as acreage, prominence and appearance from the valleys for the farming communities which named Ireland's mountains. After all, Slieve Meelbeg in the Mournes is higher than its neighbour Slieve Meelmore, and there are several other similar cases. Aghla Beg (South) lies further back when the Aghlas are seen from the N end of Lough Altan or the valley of the Tullaghobegly River. It is Aghla More and Aghla Beg which are prominent from this W side. Aghla Beg (South) is much more prominent from the valley of the Calabber River (S & E), but this valley is largely uninhabited, so this perspective may have been unimportant for the naming of the peaks in the group. Has anybody any other ideas? Linkback: https://mountainviews.ie/summit/336/comment/2882/