North Korean leader Kim Jong-un, second from left, and South Korean President Moon Jae-in pose with North Korean first lady Ri-Sol-ju, left, and her South Korean counterpart Kim Jung-sook next to them at Changgun-bong, the peak of Mount Paekdu, Thursday morning. Joint Press Corps

President Moon Jae-in and North Korean leader Kim Jong-un raised each other's hand atop Mount Paekdu, the Korean Peninsula's highest peak considered the birthplace of the Korean people, in a highly symbolic gesture underlining their commitment to reconciliation and eventual unification.

The joint visit put a powerful ending to Moon's three-day trip to the North that produced a series of tangible results, including Kim's pledge to take concrete denuclearization steps, such as dismantling the country's ICBM test site, and his pledge to make a reciprocal visit to Seoul.

The two leaders also agreed to take sweeping measures to reduce military tensions and further bolster inter-Korean exchanges and economic cooperation, such as reconnecting cross-border roads and railways, and to work together to win the right to host the Summer Olympics in 2032.

Officials said Kim first proposed the joint visit to Paekdu and Moon accepted the offer.

The North's leader is believed to have made the offer because Moon said during a dinner after his first summit with Kim in April at the border village of Panmunjom that he hopes to trek up the mountain and he believes Kim will make the wish come true.

"I believe there will come a time when ordinary people of the South can make sightseeing trips to Mount Paekdu," Moon said, overlooking the caldera lake at the top of the mountain, named Cheonji in Korean, which means Heaven Lake. "The first step has now been taken, and if this step is repeated, much more people will be coming here."

South Korean President Moon Jae-in fills a plastic bottle with water from the Heaven lake of Mt. Paekdu, North Korea, September 20, 2018. Joint Press Corps

Kim said Paekdu has been a mountain out of reach for South Koreans since the national division.

"Though a small number of people came here today, (more) people from the South and overseas should come see Mount Paekdu," he said.

The leaders and their wives wore winter coats, given the chilly temperatures at the mountain, located on the border with China in the North's northwest. Officials said the morning low dipped to as low as 2 C.

Why Mount Paektu? 2018-09-20 14:30  |  North Korea
Kim proposed going down to the lake.

"Would you like to go down to Cheonji?" Kim asked Moon.

"If Cheonji doesn't reject me, I'd like to go dip my hands into the water," Moon said.

South Korean first lady Kim Jung-sook took out a plastic water bottle, saying she brought a bottle of water from the southern island of Jeju, and that she will pour half the Jeju water into Cheonji and fill the empty half with Cheonji water in a symbolic sign of unification.

The North's first lady Ri Sol-ju displayed her knowledge of the mountain.

When leader Kim asked aides how deep the lake is, Ri quickly answered that it's 325 meters deep.

Moon, Kim and their wives boarded a cable car to descend to Chonji crater. Joint Press Corps

"There are a lot of legends involving Mount Paekdu. One says a dragon lived here and went up (to heaven). Another says fairies from the heaven came here to take a bath as the water is so clean. Now that you two came here, another legend has been created," Ri said, referring to Moon and the first lady.

Earlier in the day, Moon left the North's state guesthouse to fly to the Samjiyon airport near the mountain. As Moon's motorcade passes, North Koreans lining the streets cheered, waving paper flowers and the North's national flag and chanting, "unification of the fatherland."

The mountain is revered in both Koreas.

South Korea considers the 2,744-meter peak one of the peninsula's most sacred places as it's known as the birthplace of Dangun, the legendary founder of Gojoseon, the first Korean kingdom, founded more than 4,000 years ago.

North Korea regards the peak as sacred because it's where Kim Il-sung, the country's late founder and grandfather of the current leader, set up a secret military base for anti-Japanese, independence struggles during the 1910-45 colonial rule.

It is also where the North says late leader Kim Jong-il, father of the current leader, was born. That's why Kim's family is called the "Paekdu bloodline." But some historians say the late leader was actually born in Russia. (Yonhap)