Dooish is the highpoint of a jumble of peaks beside Lough Veagh. Its N slopes are boggy, steep and inhospitable but the summit is rocky and a pleasure to walk. The views are stunning esp. of Errigal, the Aghlas, Muckish and, further afield, the Bluestacks and some offshore islands. You will need to head to its SE top to get a view of Glenveagh. Watch out for golden eagles too.

NW. Park at about B96522 21277 A, head across the bog, and climb steeply aiming for Dooish SW Top. From here follow the obvious ridge to Dooish over easy, pleasurable terrain - a mixture of flattish rock and grass with a few defiles en route. Allow 1 – 1.5 hours.
Or, more directly, start anywhere along the R251, head steeply through similar terrain aiming for the obvious col and deer fence at B97231 20738 B. Head E along easy terrain to the summit. Allow 1.25hrs+

N. Park at approx. B98371 22731 C. cross the river and make a beeline for the summit of Saggartnadooish. Drop SW to the col by a lake and then head W for Dooish. 1.5hrs+
Also from Saggart. you can head E taking in its E top as well as Dooish SE top before ascending D. The terrain is easy enough in this region. 2.5hrs+

S. Get to approx. B99345 18281 D either by bicycle or bus from the Park Visitor Centre or park at B97098 15812 E and walk NE along a trail. From the starting point, head N, crossing the river and walk up the steep slopes to Dooish SE - from here it's an easy stroll to D. 1.5hrs
Notable tracks incl. track/2765 and track/3872 Linkback: https://mountainviews.ie/summit/187/comment/4947/

Used carpark at Errigal, crossing road and following stream downhill before crossing bog SE over river and then climbing the slopes of Maumlack. The ground was wet but no real problem and there are great views across the valley to Errigal & Mackoght and across Dunlewy Lough out to the Atlantic. The ground levels out and have to take off pack to squeeze through the deer fence. Rocky summit area and beehive cairn of Maumlack reached in just under one hour - panoramic views over the very sizeable plateau, SW to Slieve Snaght and NE to Dooish. Steep drops to N as skirt around Croloughan Lough below. I took a bearing on group of little loughs nestled just before the climb up Dooish which could prove useful in poor weather. Meet the deer fence as climb again and can follow before turns sharply to the L (in need of some serious repair along the top of Edenadooish). Final climb to the summit is mostly over rock and is a pleasure with big views all around. To the N the line of hills from Errigal to Muckish lie across the valley, to the S the rugged outline of the Bluestacks, to the W the coast and Slievetooey, to the E the further Slieve Snaght and just about the Sperrins. Dropped down 200 m to NE for Snaggartnadooish (see for next part of walk). Linkback: https://mountainviews.ie/summit/187/comment/1666/

The picture below is of a golden eagle, taken on the descent from Dooish. If you are into wildife, Dooish is a great one to climb from the Glenveagh side. It has quite a long approach accross rough ground to get to it, but the scenery makes it well worth it. This is one of the most isolated places in Donegal for a hillwalk, no chance of hearing a distant car, the only thing you may hear if you take this route in the Autumn is the deer, which can give you a good fright if you are not prepared for it. Autumn is the rut season. Do not venture this walk from the Glenveagh valley side if you dont have a map and compass, once the clouds come down you could be in a lot of trouble, as I found out once! Linkback: https://mountainviews.ie/summit/187/comment/1458/

Straight across the bog from the valley road - passable easily after such a dry summer. Tougher going as the incline picked up, then easy going across the rocky tops. Wasps nest in the summit cairn! Great views. Linkback: https://mountainviews.ie/summit/187/comment/622/

Started from the layby on the R251. Although only a short walk distance wise, Dooish makes you work right from the very start as you are immediately onto boggy ground as soon as you leave the roadside. Squeeze through the deer fence and aim to the left of Dooish to avoid the cliff blocking direct access to the summit.

Having climbed Muckish beforehand, I found the going up Dooish very tough right up to the col after which a steep but short climb leads to the rocky summit area and the very welcome sight of a beehive cairn. Excellent views across to Errigal, Makoght and Altan Lough as well as back across to Muckish. Decided to descend the other side of the mountain and came across a strange weather station with an onboard data-logger just below the summit. Made back towards the road - care is needed on the descent as it's quite steep in places with several slabs to be avoided. Up and down in two hours with several stops for photos. Perhaps a poor relation of Errigal and Muckish but a rewarding climb nonetheless. Linkback: https://mountainviews.ie/summit/187/comment/4271/

Approach to Dooish from the South is very 'Doo-able'. There is a small building (possibly an old school?) at the Western end of the lake with an easy crossing of the river.There are a number of ways to get here, one of which is to cycle from the car park at the entrance to Glenveagh. This is around 7.4k. Another, shorter approach is from the West, down the track at the bend in the R254 road.
If using this route to Dooish, (see track 3872),I would recommend ascending/descending by the waterfall, NOT the route of ascent I used. This is very hard work and filled with potholes, boulders and long grass. Linkback: https://mountainviews.ie/summit/187/comment/19994/