Many expletives.
Sounds as if TN (and NYC?) must be in a hurry to get rid of anything worth investigating before it might be shown that the pits could be connected to the Henges. From the info provided, it seems more than a tad unlikely that they wouldn't be connected in some way.
Here's hoping there are other things lying hidden that might not get knackered by such money-grabbing fuckwits. Things that might put the kaibosh on Tarmac Northern's future plans.
BN, try not to let it get to you too much, shit platitude I know, but when you're as emotionally invested in matters as you seem to be about this one, it can really do your head in. Stay cool.