The vast majority of ghostly reports from Mametz Wood concerns the sensation of being watched.
People walking from Flatiron Cemetery, along the track before the trees, up to the Red Dragon monument find themselves feeling uneasy.
Even those who know nothing of the history, in this particular spot, gain the sense that dozens of eyes are charting their every step.
Of course, that's precisely what would have happened there in July 1916. The Lehr Infantry Regiment were watching from the trees. Their machine guns were at the ready. These men were known to be a formidable enemy, but they were also very human. Their fear and discomfort amongst the trees would have been palpable.
It wasn't only the Welsh who died at Mametz Wood. The Lehr-Infanterie-Regiment was left in such tatters that it couldn't be deployed again until September 1916, when fresh German conscripts had replenished its ranks and been trained to fight.
But for the Welsh Division coming, there was the reality of being sitting ducks out in that field and on that track. For most of them, this was their first taste of war, as their regiments had only recently been created by Prime Minister David Lloyd-George.
While the Germans were battle-hardened and weary, the Welsh were suffering the shock of arriving fresh from their native valleys. This was supposed to be full of honor and glory. Instead they'd had their leader, Major General Ivor Philipps, relieved of command under the slur that his Welsh Division wasn't 'determined' enough, because they hadn't taken the woods on day one.
Filled with shame, guilt and the injustice of it all, the Welsh were forced to clamber over the bodies of those who'd died on every day of the assault previously. Right into the German machine gunfire.
Meanwhile the Germans were also living with the sight and close proximity of all those Celtic dead. Teutonic eyes spent days staring out over the corpses, knowing that they'd have to add to the piles or be killed themselves.
Until the Welsh finally broke through, then it was hand-to-hand combat with fixed bayonets, daggers and point-blank gunfire.
Such high emotion, from both sides, can leave residual energy in the atmosphere. It is almost certainly this which modern day visitors to Mametz Wood are feeling.
Is the Lehr Infantry Regiment still watching? Probably not, but it feels like they are. At least to anyone with an ounce of clair-sentience in their soul.