This is the trig point sitting on King's Seat (531m) on the border ridge between England and Scotland.
Best way to get to it would be to park at Wedder Leap car park and then just follow the permissive parth north, skirting Hazely Law and up to the border ridge. Then head further north until you get to the trig point.
It's an 8km walk there, but you can also head back down the ridge and bag Windy Gyle trig point at the same time.
Thanks to Brian Steel for the photos.