Pikkjärv (Viitna)Pikkjärv is a lake in Estonia. It is located in the village of Viitna in Kadrina Parish, Lääne-Viru County. A smaller lake called Linajärv is located about to the northeast.Physical descriptionThe lake has an area of, and it has three islands with a combined area of. The lake has an average depth of and a maximum depth of. It is long, and its shoreline measures. It has a volume of.