Had a go at this with fountain pen with imprecise results. Tried again with pencil about a week later, getting it down in about two and a half hours. Inked the original at home using my usual 102 nib pen, but also with a 107 nib pen for extra detail. Got a pretty visceral image out of this.
10.75 x 8 inches, dipping pens with 102 and 107 HUNT nibs on printed copy of pencil original done on-site, 2019. Print is a matted, mounted, signed 600 dpi print on white acid free cardstock with half-inch borders, in a limited run of fifty. I only use permanent, pigment-based HP inks which meet the ISO 11798 fade-resistance standard.