One of many "hidden quarries" in productive trilobite country. About 15 miles south of the U Dig site. Hard work but with a shovel and tools to split shale, you will find more than you would have expected. Elrathia is the most common trilobite to be found here. Not too far west and you will find Pernopsis, blind trilobites that look like "bar bells". Also some "unknowns" that you need to take home and figure out WHAT it is. Sometimes, multiple complete specimens in the 3/8 inch to 1 1/2" sizes!
Camp just below the quarry or look around at loose slabs for trilobites washed down the cliffs.