Working with gulapata on your garden railroad By Angela Cotey | March 30, 2006 | Last updated on January 20, 2021 Download this free article Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Jack Verducci shows you how to make durable, outdoor rock formations from a mixture he calls “gulapata.” Download the 1997 article free here. Share this article Print Facebook