tl;dr: The part of speech of mountains is here a noun. It’s the direct object of the verb climbing.

1a : a landmass that projects conspicuously above its surroundings and is higher than a hill The sun set behind the mountains. b : an elongated ridge. 2a : a great mass a mountain of a man— E. K. Brown. b : a vast number or quantity a mountain of mail a mountain of debt.

The word mountain can help you remember that one way to mount is to climb. The oldest meaning of mount is, in fact, “mountain,” from the Old French word mont, which has its root in the Latin montem for “mountain.”

1a : an elongate depression of the earth’s surface usually between ranges of hills or mountains. b : an area drained by a river and its tributaries. 2 : a low point or condition. 3a : hollow, depression. b : the place of meeting of two slopes of a roof that form on the plan a reentrant angle.

The Valley of Death, an area of poisonous volcanic gas near the Kikhpinych volcano in Russia.

Some examples of valleys that are wholly surrounded by higher ground and do not open to the ocean include Death Valley in California and the Jordan River Valley in the Middle East. In some instances, valleys have side valleys, which are formed by tributaries to streams and rivers and feed the main stem.

20 World’s Most Beautiful Valleys

• 1# Khumbu Valley – Nepal.
• 2# Valley of the Ten Peaks – Canada.
• 3# Barun Valley – Nepal.
• 4# Lötschental Valley – Switzerland.
• 5# Kaghan Valley – Pakistan.
• 6# Valley of Flowers – India.
• 7# Kalalau Valley – USA.
• 8# Yosemite Valley – USA.

rift valley

Referred to as the world’s smallest mountain range, the Sutter Buttes has as its highest point the summit of South Butte, at 2,122 ft (647 m), which is also the highest point in Sutter County….

It covers approximately 18,000 square miles (47,000 km2), about 11% of California’s land area. The valley is bounded by the Coast Ranges to the west and the Sierra Nevada to the east….Central Valley (California)

List

Deukhuri valley of the district is the capital of the province and is the second largest valley of Asia surrounded by Sivalik Hills and Mahabharata Range. The district headquarter Ghorahi is the seventh largest city and the largest sub-metropolitan city of Nepal….Dang District, Nepal.

Sandhan Valley

DANG VALLEY NEPAL

Araku valley

1. Araku Valley. Araku valley is located in the Indian state of Andhra Pradesh and is one of the most photogenic valleys of the country. The place is mostly visited during the winter season from the months of December to February.

Bengaluru

Kali Gandaki Gorge

From a condor’s perch on this gorge in southern Peru you could look down on 10 of New York’s World Trade Center towers stacked end on end. The 60-mile-long Colca Canyon formed by the Colca River is the deepest land gorge on Earth, according to the Guinness Book of World Records.

India has its very own version of the Grand Canyon and it is just as beautiful as its American counterpart. If you want to witness this gorge, all you have to do is head to Gandikota in the Kadappa district of Andhra Pradesh.