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Jura's not really somewhere you can just pop over to on whim, so we treated ourselves to a long weekend at the very pleasant and friendly Jura Hotel, giving us the choice of 2 days to do the Paps. Saturday morning was very wet, though it cleared up in the afternoon, and we had a drive up and down the island, a walk on the beach and a visit to some of the standing stones.
That left Sunday for the Paps, and a better weather forecast, though as we set out from the bridge over the Corran River, the cloud was well down on the tops. There's an obvious, if rather boggy, path which isn't on the OS maps, that cuts across the hillside on the south side of the river towards Loch an t-Siob. We crossed the river 100m below the loch and headed up grassy slopes towards Beinn Shiantaidh. As we reached the steeper ground we entered the clag. We followed a promising looking path heading off leftwards, hoping it might avoid some of the notorious boulders, but it doesn't! We turned back upwards towards the vague SE ridge, which merges into more complex ground and acres of quartzite blocks.
A few glimpses of sun through the clouds gave us some hope, but we arrived at the summit with no view.

The west ridge is quite steep in places, with a wee easy scramble down a groove at mid height, then easier grassy ground towards the col. At last the cloud was begining to break up with a few shafts of sunlight.

Cloud trying to clear off Beinn Shiantaidh

A glimpse of sun of Beinn a' Chaolais
The way ahead lies well over to the left, where there's an obvious section of path. This leads to a grassy shelf which cuts across the face of Beinn an Oir, avoiding all the boulders. A steeper section, still grassy, took us onto the ridge where there are the remains of two small buildings (apparently a temporary camp for the surveys of Thomas Colby). A final 200m or so leads to the summit trig point. Despite having seen the summit from below, there was still no view.
On the south ridge, there is no escape from the stones and scree, it's a long way down, and it doesn't pay to hurry! On the plus side, the sun finally came out

Scree!

Loch an t-Siob and Lowlandmans's Bay

Beinn a'Chaolais
From the col Beinn a'Chaolais looks a bit daunting: there's an obvious worn scree run, but by keeping a bit to the left we found we were able to avoid the worst of the stones. Once on the ridge there's a trace of a path, but it still felt like a long way to the top.

Beinn Shiantaidh
At last were were able to sit and take in the views.
Beinn an Oir and Beinn Shiantaidh

Islay Hills and the ferry in the Sound
The descent was thankfully fairly easy: back down to where we had joined the ridge and then straight on down a heathery rake. Suddenly the angle eases, and you are back onto very welcome soft grass all the way to Loch an t-Siob. We found a path on the south side, and picked up our outward route back to the bridge.

The steep south ridge of Beinn an Oir

Beinn Shiantaidh and Loch an t-Siob

Beinn a'Chaolais and Loch an t-Siob
A grand day out: tough going for such small hills, but a splendid round. Easily makes it into my Top 30 Munro-less walks (see
http://www.walkhighlands.co.uk/Forum/viewtopic.php?f=1&t=19267&start=15#p197609 )!