Work to clear part of the so-called Calais "Jungle" camp has restarted after a first day of demolitions saw fierce clashes between migrants and police.
Humanitarian workers condemned the actions of French authorities after tear-gas was fired during the demolitions.
The camp is a temporary home to around 4,000 people, many of whom are hoping to reach Britain.
Save the Children has described the scene at the Calais "Jungle" camp as "very chaotic" and said dismantling it meant the problem was just being moved to other camps "in worse condition."
Speaking from Calais, Ginny Howells, UK emergency manager with the charity, said: "They are all just incredibly worried and anxious.
"People are dispersing into the northern part of the camps - it's really just moving the problem to other camps, which are in a worse condition.
"No one wants the Jungle to exist but until you've worked with them, don't demolish the community structures that have been built up."
More shelters have been destroyed after fires broke out at the 'Jungle' migrant camp in Calais overnight.
Clashes have broken out between migrants and riot police after the French authorities began to dismantle a camp known as "The Jungle".