There are no fees for this national monument.
Here are the basics:
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On days when air quality reaches ‘Hazardous”, i.e. over 301 AQI, all non-emergency outdoor activities must stop, and moved to an indoor setting.
There is an internet-connected air monitoring device running near the jail, that we use to determain when activities must move inside. Here’s a link to view the live air quality data:
Last updated: October 30, 2022