Thirty nine people have been arrested after climate activists blocked Dover port, causing queues of vehicles attempting to cross the Channel.
Insulate Britain, which has brought chaos on the M25 five times in the past fortnight, said more than 40 people had gathered.
The Kent port – Europe’s busiest ferry terminal – said passengers should take extra time for their journeys.
The main protest began at 08:20 BST and was cleared by police two hours later.
One lane of the A20 remained blocked afterwards, as two protesters were sitting on top of a tanker with their hands glued to the vehicle.
While she was on the tanker with her hand stuck to the railing, one protester who gave her first name as Stephanie said she did not want to be there.
She said: “I want to be home with my family spending time with them but if we don’t do this they aren’t going to have a future.