From Natural Resources Wales (with apolgies for issuing this slightly late):
Neuadd car park will be closed from Monday 25th June 2018 for a month. This is to allow for civil engineering works to take place.
As soon as this work has been completed the car park will be cleared and open for use again.
Sorry for any inconvenience this may cause.
Please park in Pont Cwmyfedwen Car Park as an alternative during this work.