Several fault lines, of Late Glacial or Holocene age, occur along an 80 km long zone trending SW-NE on Finnmarksvidda. The faults appear as well defined, often linear steps in the otherwise smooth till cover. Northeast of the lake of Ie jav'ri the fault crosscuts glaciofluvial deposits, indicating that at! east one section of the fault is of Holocene age. The maximum observed displacement is 7 metres. The western block is depressed. Electromagnetic (VLF) measurements indicate locally a southeasterly dip, which implies that sections of the Stuoragurra Fault are reverse or low angle thrusts. Older fracture zones in the area were identified by interpreting aeromagnetic data. This interpretation map yields distinct sets of dislocations whose main directions are 30" W, 5 E and 42," E. It is concluded that the Late Quatemary faults partly coincide with the older fault zones, but that Late Quatemary fracturing outside these zones also occurs locally. The recent seismicity occurs along an elongate duster oriented NE-SW, about parallel to the neotectonic structures. This indicates that the mechanisms which produced the faulting are possibly still active. It is concluded that stress associated with spreading at the Mohns, Knipovich and Nansen Ridges, viscous drag force at the base of the lithosphere and colliding resistance along the southem border of the Eurasian plate are likely to be important contributors to the mechanism generating faults. The release of these stresses could, however, be related to the deglaciation period.