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Geophysical surveys are used frequently in the early stages of the landslide study, associated with the traditional drilling. But for monitoring the slide are used only the bore holes equipped with various sensors and expensive devices for movement measuring, which cannot be recovered and are destroyed once the slippery mass moves again. To continue the monitoring of the next stage of the landslide involves new drillings and a new set of devices. Finally the cost of monitoring will be very high. Initially, the Bre...