
The Alborz range, also spelled as Alburz, Elburz or Elborz, is a mountain range in northern Iran that stretches from the border of Azerbaijan along the western and entire southern coast of the Caspian Sea and finally runs northeast and merges into the Aladagh Mountains in the northern parts of Khorasan. This mountain range is divided into the Western, Central, and Eastern Alborz Mountains. The Western Alborz Range runs south-southeastward almost along the western coast of the Caspian Sea. The Central Alborz runs from west to east along the entire southern coast of the Caspian Sea, while the Eastern Alborz Range runs in a northeasterly direction, toward the northern parts of the Khorasan region, southeast of the Caspian Sea. Mount Damavand, the highest mountain in Iran measuring 5,610.0 m, is located in the Central Alborz Mountains.

Alma Gol Lake, also called Lake Ulmagol, is a freshwater lake in Golestān Province, Iran near the Turkmenistan border.

Ashūradeh, or Ashur Ada, is the only island of the Iranian coast of the Caspian Sea. Ashuradeh's surface is 800 hectares . It is located on the eastern end of the Miankaleh peninsula in the county of Behshahr of Māzandarān Province of Iran, 3 kilometers (1.9 mi) from Bandar Torkaman and 23 kilometers (14 mi) from Gorgan.

The Atrek, also known as the Attruck, Atrak, and Etrek, is a fast-moving river which begins in the mountains of north-eastern Iran, and flows 563 kilometres (350 mi) westward draining into the south-eastern corner of the Caspian Sea in Turkmenistan. Because of the high use of its waters for irrigation, it only flows into the Caspian when it is in flood stage.

The Alborz range, also spelled as Alburz, Elburz or Elborz, is a mountain range in northern Iran that stretches from the border of Azerbaijan along the western and entire southern coast of the Caspian Sea and finally runs northeast and merges into the Aladagh Mountains in the northern parts of Khorasan. This mountain range is divided into the Western, Central, and Eastern Alborz Mountains. The Western Alborz Range runs south-southeastward almost along the western coast of the Caspian Sea. The Central Alborz runs from west to east along the entire southern coast of the Caspian Sea, while the Eastern Alborz Range runs in a northeasterly direction, toward the northern parts of the Khorasan region, southeast of the Caspian Sea. Mount Damavand, the highest mountain in Iran measuring 5,610.0 m, is located in the Central Alborz Mountains.

Gorganrud is a river in northeastern Iran. It begins in Mount Aladagh, located in the North Khorasan Province. Flowing through the Golestan Province, it ends at the Caspian Sea.

Kaboud-val waterfall also transliterated Kaboud vâl, is a waterfall in Iran's Golestan province. It is near the Aliabad-e katul city about 3 kilometers to the south.

The Shirabad Waterfall is a waterfall in the Alborz mountain range, at the village of Shirabad in the Fenderesk District of Golestan Province, northern Iran.