Here is a link to the map in PDF format. It doesn't show the bunkers, but it shows all the service roads. You will need to walk all these roads to find them as they are spread over the whole area. I've hiked these many times and seen these bunkers. https://nature.mdc.mo.gov/sites/default/files/downloads/conservation-areas/4901map.pdf
The office should have a map that shows them .
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