In Vancouver, argue that a large gap formed early Friday morning at a busy intersection of Seymour and Robson, has no rational explanation.
"We do not know what caused this crisis," said spokeswoman Wendy Stewart Hall. "The earth was dry. There was no water or damaged pipes and communications."
She added that the dry summer weather — it's not the typical conditions under which usually occur failures.
Movement at the intersection was blocked until the completion of the liquidation of the failure, according to vancouversun.com