Rostki

53°42'31"N 021°54'14"E

Runway: 07/25 - 2000x20meters - concrete

Note: the number of runways at the airfield vary between 1 and 3 with varying dimensions.
I have used the information on the Polish Wikipedia site as being the correct information.

Rostki airfield (polish: Lotnisko Rostki, also known as Lotnisko Orzysz Rostki, German: Flugplatz Rotstken, or Flugplatz Arys-Rostken) was an airfield 175 kilometers north-northeast of Warsaw. 
The decision to build the airfield was taken in 1936. For the local population the cover story was made up that the airfield would be built for the Johannisburg aeroclub. The decision did not run into any opposition with the local community. The region was very poor, and the price for the lands was good. Additionally many locals found employment in the construction of the airfield. Construction of the airfield lasted until 1938.
The concrete airstrips were built, 2 kilometers long and 20 meters wide, masked to look like access roads to the nearby village. A taxi-ring track was built under camouflage nets in the forest. Airfield buildings were constructed in the forest and in the vollage. The tower was built between the tall pine trees on the hillside local cemetary.

In 1939 the villagers saw Stukas and Jagdgeschwader 21 Me109Ds taking off during the Poland campaign. The scenes were repeated in 1941 during Operation Barbarossa (the invasion of the Soviet Union). 
Between 15 and 20 September the airfield was the scene of a remarkable event. Luftwaffe officers were dressed at their best and the locals expected another visit by Hermann Göring. He frequently visited the airfield and the region to go hunting, staying at the Göring-Quarters in Breitenheide (Polish: Szeroki Bór Piski). This time he was accompanied by Adolf Hitler, who he had invited on a hunting trip as to celebrate the fact that they had rescued Mussolini (the Italians had just surrendered to the Allies). Local witnesses reported Hitler looked very pleased.
In 1944 the combat units returned to the airfield. Many returned damaged from their missions, until the Soviets occupied the area around the end of 1944.


No pre 1990 photos have been located

After the war the airfield buildings were blown up. Only concrete foundations and the concrete taxi track were left remaining. The entire area was turned into a military training area with an exercise grass airfield. During the exercises the airfield would be mostly used by helicopters.
The airfield was abandoned after the fall of the Warsaw Pact.


Photo of the taxitrack in 2006 (fotosik.pl).


Aircraft at the former airfield photographed in 2007 (fotosik.pl).

Parts of the ring road were covered with asphalt until about 1996. Most of the rest of the airfield was destroyed by the war and later the Soviets. Stories circulate in the village about underground fuel tanks still holding aviation fuel (although the Luftwaffe was notoriously short on fuel in the final year). Villagers also claim that the area is still hiding weapons supplies and even a motor boat that was used for guerilla like tactics against the Soviets.
The site occasionally still sees some aviation in the form of M-18 Dromader, M-110 Kolibris, gliders, although it is no longer an official airfield. It is however still used as a landingsite for military exercises though. Polish sources on the internet suggest the concrete runway may still be at the airfield, but overgrown with grass.


Ca. 2010 overview of the field on a Polish military website.