A massive sinkhole has opened up on the opposite side of a road where another sinkhole appeared in December 2015 in Oregon.
The road has now been completely consumed by the Larger Sinkhole. A sinkhole usually forms by erosion caused by frequent exposure to water. It comes down to the type of rocks underlying the soil (as opposed to the soil above called the overburden).
Most sinkholes occur in areas where the bedrock is formed from soft minerals and rocks like salt, gypsum, limestone, dolomite or others belonging to the evaporate or carbonate classes of rocks.
