The Polka Dot agate deposit has been producing fine agate for a long time and is still going strong. There are also a couple small caves adjacent to the deposit itself. For centuries, Native Americans mined the deposit, using the hard agate and jasper for tool making. Artifacts made from this distinctive agate have been found as far away as Colorado. While many locations have a former heyday—some time in the past when the “good stuff” was coming out—this does not seem to be the case at the Polka Dot mine. The good stuff just seems to keep coming.