My reputation is to low to comment but that looks like frost heave to me, does this area experience freezing temperatures?
If it is frost-heave the answer is generally proper drainage and replacing the susceptible materials under the pavement.
EDIT: As suggested by Phil Sweet this could also be blistering. There are several types of blistering and the remediation depends on the underlying cause. Blistering can be caused by a number of factors and would require inspection by a professional to determine the cause.