NOTE: due to the confined space of the tunnel, only 30 people can sign up for any given Weir Tour. But, due to the great interest in the weir tour we have scheduled extra tours.
Tips for getting into a tour :
Check the website daily beginning the last week of every month, as that is when we add new tours.
Check again during the last few days before a scheduled weir tour because when people let us know they will cancel, places may open up at the last minute
