So after teaching another class on field sketching in Hertford, I pulled into the refuge to see billows of smoke rising up from the horizon behind the fields. I did a couple of sketches and watched for awhile, puzzling as to where the fire was.
Upon pulling back onto the road home, I found the source; a control burn of the marsh. Driving by it was awe inspiring; a curtain of wavering air and flame. Controlled burns are common here, and after doing the sketches I decided to do a finished painting from them back in the studio.