All you need to know – Waterfalls of Finland




 Waterfall data
Height 4 m
Tallest Drop 4 m
Length 0 m
Volume (avg.) 0.4 m3/s
Volume (max.) 6 m3/s
Primary form Block
Watercourse Kero-oja
Latitude 66.22611 (N)
Longitude 27.36032 (E)
Location Posio

Keroköngäs is a steep waterfall with a total height about 4 metres. It is located in the western part of the Korouoma Canyon in Posio. The waterfall flows in the small river called Kero-oja, which is fed by water from the swamps north of the valley. As the river flows down into the valley, it winds through forest slopes for more than a kilometre. The waterfall is formed close to the bottom of the valley, when the water goes over a nearly vertical cliff.

Actually the waterfall does not have an official name. When I was writing this article, it was not marked on any official terrain map. As the waterfall is generally unknown for public, there are neither signs nor forest trails leading to the fall. The name "Keroköngäs" was given by me to the waterfall in this article, based on the same practice used with some of the other falls in the Korouoma area. The name of the fall is derived from the name of the river (or place) in the same way as, for example, the nearby Paloköngäs in the Palojoki River or Auttiköngäs in the Auttijoki River.

As Keroköngäs foams in the middle of the old rugged forests of Korouoma valley, it is a valuable nature sight already because of that. The waterfall flows through a "rock gate", and the river makes a sharp turn to the left, when rushing down the cliff. The eastern side of the waterfall is practically a vertical drop, whereas the western side of the fall is rather a tiered drop. The rectangular appearance of Keroköngäs makes it a (rare) block waterfall, although we can assume that when the water is low, the waterfall's form is narrower, closer to a ribbon-like (or plunge) shape. After the fall the water continues its way to the marshes at the bottom of the valley, flowing then down into the Korojoki River.

Although there are no marked trails to the waterfall, it is fairly easy to find if you know what to look for. The walking trip to the waterfall from the nearby Kaarlojoentie gravel road is just about 300–400 metres through the forest, depending on the route. The car can be left on the Kaarlojoentie road. The recommended route is to walk first south of the road to the bottom of the valley. Then you can walk southeast along the bottom of the valley, until you reach the Kero-oja River. The terrain leading to the waterfall is relatively open and easy to walk, and the roar of the waterfall can be heard from afar. When you get closer, you can also see the white foams of the fall through the trees.

On the whole, Keroköngäs is a very refreshing and beautiful waterfall. The joy of the success of finding a new Finnish waterfall was unforgettable, when I visited the place in May 2015. As I mentioned above, I had no previous information of the waterfall – only an unclear orthographic image of a terrain map and my instinct that said (based on the image and the shape of the river on the map) that "there might be something."

The feeling of joy when you see an unknown pearl such as Keroköngäs for the first time, is an unforgettable experience. At the same time, it points out that there can still be undiscovered surprises in the wilderness of Finland. Because of these personal reasons I cannot give this waterfall less than four stars!

Driving address

Kaarlojoentie 12, Posio
GPS: 66.22886 (N), 27.35829 (E)
Open the location in Google Maps

Hiking trip from the road to the waterfall through the forest is about 300 m.

Video of the waterfall

Travel companies nearby:

Rental cottage






Other nearby waterfalls (up to 30 km):



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Last update

Waterfall added to the site 13.12.2015, last updated 18.05.2022

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