I spoke to the fire crew oppo, it was too far away to get water hoses to, they'd had to beat it out mainly. Lots of other callouts over the hol weekend.. plus they're volunteers, a lot of them remember. The guys missus had sent him a pic of her eating supper holding a glass of wine. It was quite a big one in a wood, the trees should survive but all else charred. Pix'll give gist later. As for what the effing bikes had done to the cairn: rather saddened and cross is understatement.