What I'm doing wrong? My river is on the picture below:
Here is the part of KML file:
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://earth.google.com/kml/2.1">
<Placemark>
<name>wisła</name>
<description>Hydro_Polygons_Generic_River_Perennial</description>
<Style>
<PolyStyle>
<outline>0</outline>
</PolyStyle>
</Style>
<Polygon id="ID_copy0">
<outerBoundaryIs>
<LinearRing>
<coordinates>
20.65357560483244,52.42557056302384,0 20.65385471981905,52.42566401765699,0 20.65466061594637,52.42601443453565,0 20.65597982531449,52.42607625555922,0 20.65719734638113,52.42633049924037,0 20.65776729656278,52.42640828414693,0 20.65933954452777,52.42685927973299,0 20.66161126702525,52.42739121588301,0 20.66385467074379,52.42768080810415,0 20.66628554829099,52.4280873196402,0 20.66864133451556,52.42812468071941,0 20.66965539923032,52.42835157476507,0 20.6718063504707,52.42875786751701,0 20.67351550363372,52.42884000623327,0 20.67489993822197,52.42872260282723,0 20.6771426157009,52.42833633845123,0 20.67909853076853,52.42802324898225,0 20.68220653705377,52.4271275192549,0 20.68465741781965,52.4262958956368,0 20.686452453738,52.42578379968631,0
[...]
20.65277120417471,52.42506550623163,0 20.65357560483244,52.42557056302384,0 </coordinates>
</LinearRing>
</outerBoundaryIs>
</Polygon>
</Placemark>
</kml>
Please help