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Posted on May 8, 2013 by Ash
The Oak at the Gate of the Dead (a.k.a. the Crogen Oak).
Once I’d seen all there was to see of the uprooted Pontfadog Oak, I got back in the car and headed for home. But only a couple of miles down the road I pulled over to visit two more giant oaks: the Oak at the Gate of the Dead and the Duelling Oak. Both of these veterans grow within a stone’s throw of one another (and right close to the Wales-England border), beside the road linking Pontfadog with Chirk.
The massive girth of the Oak at the Gate of the Dead.
The Oak at the Gate of the Dead (Derwen Adwy’r Meirwon in Welsh) is famous, at least locally, for growing at the Pass of the Graves (Adwy’r Beddau). This is thought to be the place where in 1165, during the Battle of Crogen, the forces of Henry II of England were ambushed by the Welsh under Owain Gwynedd. The battle is described in Thomas Pennant’s A Tour in Wales, published in 1778:
Offa’s ditch [Offa’s Dyke]… decends to the Ceiriog, and thence to Glyn, where there is a large breach, supposed to be the place of interment of the English who fell in the battle of Crogen, hereafter to be mentioned…
Pennant makes no mention of a large oak. Can we therefore infer, perhaps, that 250 years ago the Oak at the Gate of the Dead wasn’t significantly large or famous? ‘According to legend’, before the Battle of Crogen Owain Gwynedd rallied his troops beneath none other than the Pontfadog Oak… Would that have been at all a significant tree 850 years ago? Almost certainly not, I think it’s safe to say.
According to its page on the Woodland Trust’s Ancient Tree Hunt site, the Oak at the Gate of the Dead is a pedunculate or English oak (Quercus robur) that has a girth of 9.6 m (31 ft 6 in) at a height of 1.5 m – which equates to a dbh of 3.1 m (10 ft 2 in). By comparison, the Pontfadog Oak was listed by the Tree Register as having a dbh in 1999 of 409 cm (13 ft 5 in): a whole metre thicker! That isn’t to claim that the Oak at the Gate of the Dead is a small tree though – far from it.
Unfortunately the Oak at the Gate of the Dead split in half in January 2010. This YouTube video, by Rob McBride, tree hunter, records a visit he made to the tree just days before its collapse. In this Flickr collection, he has a photo showing the tree pre-collapse in October 2009 and another from December 2006 in which the large split in the trunk is obvious – a clear signal of impending collapse. It goes without saying that I wish I could have seen the tree in person while it was still intact.
Small Ganoderma bracket growing on the Oak at the Gate of the Dead.
Ganoderma is a wood-decay fungus causing a white rot in the roots and the stem bases of trees. Affected wood is turned soft, spongy and fibrous. It commonly leads to windthrow as afflicted trees are no longer effectively anchored into the ground. Another of Rob McBride’s photographs shows what look to be Fistulina hepatica (beefsteak fungus) brackets on the Oak at the Gate of the Dead. This fungus will also decay the base of the stem, but it causes a brown rot where the affected wood is turned brittle.
Another small Ganoderma bracket on the Oak at the Gate of the Dead.
An article at treehugger.com on the Oak at the Gate of the Dead - riddled with inaccuracies, such as that the Oak died in 2010 and that it is thought to date back to the reign of King Egbert in 802 “when Wales beat back Henry the Second” (the Battle of Crogen was in 1165) - repeats an incorrect theory put forward in this BBC News article from 2010 as to why the tree split in half. Said local historian Mark Williams:
“It seems to be a victim of the very cold weather. The tree is on marshy ground in a basin with a stream running down nearby. With the stream overflowing because of melting snow, the water must have settled around the trunk and it looks as if this has caused it to split.”
Actually the cold probably had nothing to do with the split, and I really doubt that the wee stream nearby played any part whatsoever. In all probability the Oak split in two simply because it was a very big, very old tree with a much decayed, hollow stem that was pulled apart by its long and extremely heavy limbs acting as levers, each limb pulling downwards and outwards in different directions. The tree had plainly reached a point where the trunk was no longer structurally sound enough to hold together under these forces; a strong wind could have finished it off sooner, or a heavy covering of snow, or some other loading factor. What could have prevented the split? By supporting the larger limbs with props, the forces pulling apart the stem could have been greatly reduced and the Oak at the Gate of the Dead could potentially have been kept in one piece for many years to come.
I actually met Mark Williams while I was at the Oak, where he was showing a Brummie family around, telling them of the big tree and the Battle of Crogen. He approached me because he’d just seen me at the Pontfadog Oak, where he’d been one of the farmyard group. He was a nice bloke; we talked about the two trees, and he was surprised that I knew about them - especially surprised that I knew the Duelling Oak, whose fame is not on a par with the others. Hey, a good treeblogger does his research before setting off on one of these trips!
The Duelling Oak or Duelling Tree.
The Duelling Oak stands perhaps fifty metres away from the Oak at the Gate of the Dead. It is so-called because duels was supposedly fought here, although I’ve been unable to discover any more information than that. According to the Ancient Tree Hunt, its girth at 1.5 m height was 7.3 m (23 ft 11 in) in 2012, giving a dbh of 2.3 m (7 ft 7 in). This makes the Duelling Oak almost a metre narrower than the Oak at the Gate of the Dead, but it is still an impressive veteran tree.
The mossy trunk branches off into several large limbs just above head height, so it is probably an old pollard.
The Duelling Oak, despite its age (and probably having been pollarded many years since), is still a tall tree. It is also supporting a great weight of ivy…
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