During monsoons new waterfalls are often formed in Idukki. Last year, tourists who had come to see Cheeyappara waterfalls had to deal with surging flow of water following rains.
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Scientists have warned tourists to keep away from waterfalls when they visit Idukki. It is also advised not to travel at night especially when it is raining heavily. Landslides usually occur in places that are at an incline of about 22 degrees or above. Activities such as removing top soil and mining can lead to landslides. Places such as Churuli, Keerithodu, Kanjikuzhi, Maniyarankudi, Periyar valley Pannimattam, Poochapra etc are in the list of places where chances of landslides are relatively high.
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The Geology department has provided the local administration with a map of areas where landslides are possible. Further action would be taken based on this map. If rains pour down without a break for 24 hours, there is a high chance for a landslide. People living in valleys, hill tops and mountain sides need to take extra care during this time. If landslides have occurred within two kilometres, especially in Idukki and Kannur, one can expect the phenomena of soil piping. About a year ago, the phenomenon was seen in Kanjikuzhy.