Doug Schnurrenberger with a wellhead near the drilling site on 20 March 2016 (not shown). The second photo shows the same wellhead during the March 2012 ICDP-sponsored Chalco drilling workshop, with Anders Noren lifting Rob Stewart to take a look down the well. Note that continued subsidence in the basin has raised the level of the wellhead significantly in the intervening 4 years. (MexiDrill on facebook)