The Ponor River also known as Ponar (Понaрь) is a river in Moscow Oblast

Moscow Oblast

Moscow Oblast , or Podmoskovye , is a federal subject of Russia . Its area, at , is relatively small compared to other federal subjects, but it is one of the most densely populated regions in the country and, with the 2010 population of 7,092,941, is the second most populous federal subject...

, Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

. It is a right tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 of the Nerskaya River

Nerskaya River

The Nerskaya River is a river in Moscow Oblast, Russia. It is a left tributary of the Moscow River. It is 92 km in length, with a drainage basin of 1,510 km². Its average discharge is 8,3 m³/s.The town Kurovskoye is situated on the Nerskaya....

 (Moskva`

Moskva River

The Moskva River is a river that flows through the Moscow and Smolensk Oblasts in Russia, and is a tributary of the Oka River.-Etymology:...

 tributary). It is 22 km in length. Source to the south in 1 km from the village of Krupino, Moscow oblast. Flows to the east, Ponor runs into Nerskaya on distance of 5 km on the northeast from the town of Kurovskoye

Kurovskoye

Kurovskoye is a town in Orekhovo-Zuyevsky District of Moscow Oblast, Russia, located on the Nerskaya River southeast of Moscow. Population:...

.

The country, which runs Ponor, very boggy and, therefore, difficult for hiking. Wood has only about the mouth, near the outfall of the Nerskaya.