Pärvie Fault ( Swedish: Pärvieförkastningen) is a large geological fault located in Northwestern Sweden. [1] The fault is about 155 km long and is the longest known postglacial fault in the world. [1] The fault had a major period of seismic activity following the deglaciation of Fennoscandia about 10,000 years ago. [1] It is one of several postglacial faults in northern Sweden that remain seismically active. [1]