Colin's Munros


Beinn a' Chreachain, Beinn Achaladair & Beinn Mhanach; map 377E; 20th Sept 2010

Route: 1830m = 6000'; 16.6 miles; 10 hrs.

Access: Drive 2.85 miles along the A82 from Bridge of Orchy to the turn-off for Achallader Farm (NN31134369). Previously one could park at the ruined castle by the farm, but this is no longer an option. Despite the large "P" by Achallader Farm on my 1:25000 map, parking was moved back in 2012 to NN312437, just 200m from the A82. Unfortunately, this has increased the walk by ⅔ mile in each direction along a rather dull road/path.
Route: i) I've not used the new car park, so I'm not sure about the new paths indicated for walkers to use around Achallader Farm. I've assumed the vehicle track is still acceptable.
ii) Beinn a' Chreachain and Beinn Achaladair form a great ridge walk as well as having unrivalled views in all directions. So the optional inclusion of the detour to Beinn Mhanach cannot really improve the walk unless you are really fit and don't mind the longer distance and increased ascent. However, the detour saves the long walk in to Beinn Mhanach with several potentially difficult fords when it is done on its own. The cost here is an additional 4¼ miles and 535m ascent.
iii) Although the walk described below is in the opposite direction, I much prefer walking in an anti-clockwise direction. This has several advantages, not least of which is having the prevailing wind behind on the ridge. Another is much easier route finding on Beinn a Chreachain, a third is contouring round the SE end of Beinn Achaladair at the right height (if including Beinn Mhanach), and a fourth is leaving the ford of Allt Coire Achaladair with its risk of wet feet until the end of the day. The descent through the Crannach forest to find the railway bridge at NN34944544 presents the only slight challenge in this direction.
iv) In cloud with a clockwise direction, I found the descent off Beinn a Chreachain towards Meall Buidhe to be problematic. The initial 200yds north merges very quickly and imperceptibly into the NW ridge and there is no clear west ridge shape to follow. I'd like to blame magnetic rocks for affecting my compass, but I doubt that's true!
v) There are not many safe access or escape routes on the NW side of the range. On the other hand, the SE slopes are generally fairly friendly.
vi) The Allt Coire Achaladair is usually forded at Achallader Farm where it is often shallow enough to avoid wet feet. However, when in spate, there is the option of using the bridge a little upstream at NN32364405. Also, for those taking the track on the NW side of the Water of Tulla, there is a convenient bridge at NN35334683.
vii) Contouring SW from the bealach between Beinn Achaladair and Beinn Mhanach over to the bealach between Beinn Achaladair and Beinn an Dothaidh is straight-forward in terms of terrain and there are traces of paths, but getting the height right to avoid extra climbing is easier said than done.
viii) The Allt Coire Achaladair needs to be crossed (E to W) on the descent of Coire Achaladair. This needs to be done before the stream becomes to wide, but I recall slipping on the stones where the path crosses the burn. So be careful!
ix) For the path up Allt Coire Achaladair, go from car park up to house, then left round to the back of the barn and through the gate marked "To Hill".
Weather: Overcast with showers & a sunny interval; 14°C at car; cloud on all tops until 1500.

Time Description Ht.Asc.Dist.Grid Ref.
0755 P at Achallader Farm 180   00.0 miNN32214430
0805 NE to ford Allt Coire Achaladair and stile.     
0825 Track ENE to bridge over Water of Tulla, opp ruin 180    51.25 miNN33844525
0835 Path E on S side of Water of Tulla to stile
by river at fence round forested area
0845 Path ENE along S bank to Allt na Crannaich 20025 NN34514566
0855 Path ESE to railway bridge in Crannach Wood 2751002.0 miNN34944545
0905 Path ENE by railway to forest edge    NN35534583
0925 SE towards Lochan a' Chreachain to gate and
stile in deer fence at highest pt before forest
0955 SE to stile in deer fence at highest pt of forest edge   3.15miNN36644547
  SSE below Meall Beag to Allt Coire an Lochain 6004253.4 miNN36864515
1045 SE to X Coire Dubh (or to ridge at col) 9618104.0 miNN37784488
  SW to bend in ridge 200m before summit 1045  NN37324426
S to M Beinn a Chreachain (No Orange)
(Much time lost here trying to find way forward.)
10819304.65 miNN37384403
  WNW to col 930  NN36944420
  200yds W beside bump (940m) to next col 924930 NN36754422
  W to Meall Buidhe, NE top 972980 NN36484426
  SW to Meall Buidhe, mid top 973990 NN36224405
1245 SW to T Meall Buidhe, main top 97810005.7 miNN35964383
1300 SW to bealach 813  NN35334344
  WSW to bend in ridge 975  NN34874325
1335 NW to Beinn Achaladair, E end ridge (Main cairn) 1036  NN34634335
  SW to M Beinn Achaladair, mid ridge cairn.
(Unclear that this is really the top.)
1038?12256.8 miNN34454320
  SW to ridge bend 1015  NN34274300
  SSW to col 955  NN34184243
S to T Beinn Achaladair, S Top (No Orange) 100212857.55 miNN34234204
continue ridge S to bealach
Or (3hrs) Detour E down ridge along boundary
1440 ESE along boundary to Lon na Cailliche 638 8.35 miNN35474175
  SE along fence to fence corner 710  NN35724145
  E to right end of cliffs 82014659.15 miNN36204135
WSW to T Beinn a'Chuirn (No Orange) 92315709.5 miNN36044096
1540 ENE to bealach 849 9.9 miNN36594141
E to M Beinn Mhanach (No Orange) 953167510.35miNN37324115
1610 W back down ridge to bealach 849 10.8 miNN36594141
  WNW to fence corner 710  NN35724145
1630 NW by fence back to Lon na Cailliche 638 11.6 miNN35474175
  If possible, find path to next bealach.
(Mostly fairly horizontal at about 750m, but not the
grid refs given here.) Contour SW below stones
700  NN34764100
  Contour SW into stones 725  NN34554070
  Contour SW over stones 750  NN34254055
1715 THEN: Cairn on path at Bealach with Coire Daingean 755179512.7 miNN34014056
1750 Path N on E bank of Allt Coire Achaladair
to crossing at 500m
500  NN33364173
  N to path end (by map) on W bank of river 408  NN32884240
1840 V. wet peaty path N to Railway Bridge 235180015.0 miNN32294366
1845 Track N to P at Achallader Farm 180180015.4 miNN32214430

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