Yes. This is the point of adverse possession: http://en.wikipedia.org/wiki/Adverse_possession
Land should not remain unused.
Land should not remain unused.
"They paved paradise, put up a parking lot." Joni Mitchell
IANAL, but I have a hard time believing that a court of law is going to issue a judgement of adverse possession where the perpetrator used fraud/identity theft, extortion and blackmail to come into possession of it.