To get to the Megenity cave job site, we had to spelunk with all our materials and supplies 200 feet into a cave with narrow passages and then, through a very small passage way, descend down a 20 foot vertical shaft filled with water 5 feet deep at its base. The museum required a mold to be made of the lower section of the shaft. Before we could begin molding, a platform that we could work from needed to be built, all our materials brought in and then finally, the walls of the cave dried. Three layers of rubber were then applied to the cave wall. Detailed measurements of the cave interior were taken with laser instruments in order to create a support jacket for the mold back in our shop. A support jacket was not made in situ because we could not allow any molding debris to fall into the water below our work space. The mold, once complete, was cut into manageable pieces and carried out of the cave.
We fabricated stylized 'snapshots' of regions specific to Indiana: we recreated Tipton Till Plain in the spring, Grand Prairie and the Kankakee Marsh in the summer, Shawnee Hills in the fall and Big Rivers in the winter. Because of the very specific requirements of the museum, the majority of the plants and trees needed to be made by hand. The grasses in the Prairie were grown over an entire summer at our shop and then preserved and painted.