The phenomenon can occur when low water levels means it runs into cracks and gaps in the limestone before surfacing again further downstream. This might not be a proper drought, but what do you remember the droughts of Yorkshire' s past? Email [email protected].
1. Bridge
The Grade-II listed bridge was not needed this week as the water went underground to emerge again downstream.
2. Warm weather
The hot weather has seen water levels in the river drop.
3. Stones
Many people have been exploring the riverbed since the water has gone underground, with some creating towers out of stones.
4. Riverbed
It's led to a rare chance for people to see what lies at the bottom of the river.