Bill, great photo! Looks as if the clubhouse and maybe one or two greensites are all that remained from the original course.
Phil Young is obviously the best to ask about this feature, but throwing out an idea, who's to say it wasn't a member, pro, or other architect's idea in order to 'toughen' up the hole, or, alternatively, a feature that was input by AWT but changed after the aerial. Will be interesting to learn.
Go a mile or two east and see the site of Yountakah (Travis). Looks to have wicked bunkering.
A mile or so south and slightly west is Willie Park's Glen Ridge CC.