Detroit officials plan to go underground this week to get to the bottom of what caused an intersection in the city to buckle.
The pavement erupted near Dearborn and Fort Streets in Detroit last week, lifting a building housing a cannabis dispensary so far off the ground it had to be demolished.
Neighbors also complained of an unpleasant smell, utility company D.T.E. Energy re-routed a high-pressure natural gas line in the area, and city officials say that problem is solved.
But just what caused the earth to move remains a mystery.
The city took soil samples in search of an answer and now is bringing in heavy equipment to excavate the site.
Officials including Congresswoman Rashida Tlaib and Detroit City Council Member Raquel Casteneda-Lopez called for the evacuation of nearby residents.
But other Detroit officials countered in a statement that there is nothing in the area that currently poses a threat to the community’s health or safety.