As reported in the original post there was an unplanned site outage for Stonehenge starting around 10:30am ET due to a DDoS attack on our hosting provider.
We’re pleased to announce the issue appears to have been resolved as of 3:30pm ET or so, and we’ve confirmed Stonehenge is accessible.
We apologize for any inconvenience, and if Stonehenge is part of your Autumnal equinox plans, you still have time.