Hutisko-Solanec map village  ()

The landslide lies south of the village of Hutisko-Solanec, on the east side of the road. It is about 210m long and 110m wide. There is 5 to 6m break of the scarp slope at the top of the landslide. The transportation and accumulation zones are dis-arranged and covered with fallen trees (see plate 1 and 2). 

Part of the landslide has fallen into the creek and therefore been eroded away by the flow of the water. The landslide is bordered with trees on both sides. The ground movement has disturbed the roots of these trees and caused some of them to lean, almost falling over. The expression ‘Drunk Trees’ has been given to describe their appearance.

A field road exsisted nearby but due to the landslide and the fallen trees, it has been closed. Further movement of the landslide could cause larger problems, such as jamming the creek and possibly creating structural problems for a nearby building. Also more ‘drunk trees’ would have to be cut down. The heavy rains of 1997 activated this landslide but the slope here is diping at 30⁰ and so it did not take as much saturation for the alluvium sediments to give way.

The alluvium deposit was at a thickness of ruoghly 2 to 4m and was comprised of clay-sand to sandy clay.  Geophysical exploration of the landslide revealed that it acted more like a debris flow, as the deeper rockier parts of the slide were not affected. However, some interesting anomalies arose with further geophysical surveying. This revealed that the underlying rocks were quite saturated due to high water table levels and it would be possible for further activation of the landslide if the water levels rose. The expected slide surface of these rocks was estimated to be 7m deep. The stability of the slope was calculated at Fmin=1.07 so it is quite possible that activation will occur. Then the landslide might increase its size by 100m in length and 80m in width.