Officials say the woman, who is in her 30s, fell while searching for her dog in the dark, CNN reports. The small poodle mix apparently fell into the hole earlier.
A passerby heard the woman screaming for help and called 911.
Fire crews used rope and ground ladders to rescue both of them. Fire officials at the scene were reportedly amazed that both escaped unhurt.
It is not clear how the sinkhole formed.
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