The Highways Agency have confirmed that he hole on the M2, in the central reservation between junctions 5 and 6, near Lynsted is approximately 15 feet in depth, not 50 feet (15 metres) as previously stated.
Their engineers are on site carrying out an investigation and this includes the cause of the hole.
More top news
Sunny this evening, then dry overnight. There is the risk of thundery showers for Kent tomorrow morning, then sunny spells by the afternoon
Sunshine to end the day then dry tonight. Tomorrow will be mostly dry and feeling fresher with the risk of a heavy shower in the afternoon
The video, obtained by ITV News, shows scores of migrants desperately trying to board lorries in a restricted area within the tunnel.