VIDEO: A two-car garage burned to the ground Tuesday in southwestern Marathon County and investigators have not been able to determine a cause. "It was fully engulfed when we got there," said Stratford Fire Chief Bill Griesbach. Fire crews responded just before 11:20 a.m. to the fire on Kuehlman Lane in the Town of Green Valley, southeast of Stratford. The garage is a total loss and it's believed that two vehicles were inside at the time of the fire. Small explosions could be heard inside the garage while the fire was burning. Griesbach says the owner used the garage to fix up cars and the explosions could have come from small gas cylinders or paint cans.