The Hidden Saddle refers to the fact that the weathered perlite bed is located on the "saddle" between the high points of a ravine hidden from the parking area. It can be reached only by hiking to it (ignore the first diggings). It was obvious that the people did find some thundereggs with something in them from there and my first impression wasn't good. Even so, I found some thundereggs with solid frosty banded agates and most of the thundereggs are hollow and lined with gray chalcedony. An interesting find is one lined with neon green chalcedony and I couldn't find out what kind of neon green mineral impurity that gave them strong neon green color (no one bothered to have them be analyzed). The agates are generally clear sometimes with frosty banding. Apparently, the Hidden Saddle bed are related to the Straw and Black Hill beds (maybe same lava flow that had been normal-faulted).