Tejen is an oasis

Oasis

In geography, an oasis or cienega is an isolated area of vegetation in a desert, typically surrounding a spring or similar water source...

 city in the Karakum Desert

Karakum Desert

The Karakum Desert, also spelled Kara-Kum and Gara Gum is a desert in Central Asia. It occupies about 70 percent, or 350,000 km², of the area of Turkmenistan....

, in Ahal Province

Ahal Province

Ahal Province is one of the welayat of Turkmenistan. It is in the south-center of the country, bordering Iran and Afghanistan along the Kopet Dag Range. Its area is and population 939,700...

 of Turkmenistan

Turkmenistan

Turkmenistan , formerly also known as Turkmenia is one of the Turkic states in Central Asia. Until 1991, it was a constituent republic of the Soviet Union, the Turkmen Soviet Socialist Republic . Turkmenistan is one of the six independent Turkic states...

. It is located at latitude 37.3786 North; longitude 60.4961 East at an altitude of 161 meters. It has a population of approximately 52,000.

The Hari River passes near Tejen, and is therefore known in Turkmenistan as the Tejen River.

Transport

It is a stop on the Trans-Caspian railway

Trans-Caspian railway

The Trans-Caspian Railway is a railway that follows the path of the Silk Road through much of western Central Asia. It was built by the Russian Empire during its expansion into Central Asia in the 19th century. The railway was started in 1879, following the Russian defeat of Khokand...

, and in the 1990s a new line to Mashhad

Mashhad

Mashhad , is the second largest city in Iran and one of the holiest cities in the Shia Muslim world. It is also the only major Iranian city with an Arabic name. It is located east of Tehran, at the center of the Razavi Khorasan Province close to the borders of Afghanistan and Turkmenistan. Its...

 in Iran

Iran

Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

was opened.