On the National Liberation Day of Korea hoilday this year, I was lucky enough to visit 2 royal tombs of some of the great kings in Korean history. I decided that not just a regular cache would be nice here, but a multi that would help others learn a bit more about the historical significance of this king was fitting.

Nearby, you will also find the tomb for King Sejong and I highly recommend visiting that tomb if you have the chance.

금년도 민족 해방의 날에 나는 한국 역사상 위대한 왕의 왕릉 2 곳을 방문 할만큼 운이 좋았습니다. 나는 규칙적인 캐시가 좋을뿐만 아니라, 다른 사람들이이 왕의 역사적 중요성에 대해 좀 더 배우는 데 도움이되는 멀티라는 것을 결정했다.

근처에는 세종의 무덤도 있는데, 기회가 있으면 그 무덤을 방문하는 것이 좋습니다.

There is no charge to enter this park,

but it is only open between 9am - 5pm.

이 공원에 들어가는 것은 무료입니다.
하지만 그것은 오전 9 시부 터 오후 5 시까 지 열려 있습니다.

Hyojong of Joseon (July 3, 1619 – June 23, 1659) was the seventeenth king of the Joseon dynasty of Korea from 1649 to 1659. He is best known for his plan for expedition to Manchu Qing dynasty and his campaigns against the Russian Empire by the request of Qing dynasty. His plan for the northern expedition was never put into action since he died before the campaign started.

King Hyojong was born in 1619 as the second son of King Injo, while his father was still a prince. In 1623, when the Westerners faction launched a coup that removed then-ruling Gwanghaegun and crowned Injo, Hyojong was called to the palace along with his father and given the title Bongrimdaegun (Grand Prince Bongrim) in 1626. 

In 1627, King Injo's hard-line diplomatic policy brought war between Korea and Manchus.  There, Injo and Hong Taiji signed a treaty, which included that Manchus would take Crown Prince Sohyeon, Injo's oldest son, and Hyojong to China as captive.During his exile in China, Hyojong mostly tried to defend his older brother from the threats of the Qing dynasty. However, Hyojong was worried about his brother because he was the official heir to the throne of Joseon and had no military experience. He went on to fight the Chinese in his brother's place, and he also followed Sohyeon to battles against the Uyghurs and Muslims on the western front. Along with his brother, he made contact with Europeans while he was in China; and also he learned that Joseon needed to develop new technology and a stronger political and military system in order to protect itself from foreign powers. He also developed a grudge against Qing dynasty, which separated him from his home country and his family. It was during this period that he decided to make a massive plan for northern campaigns against the Manchus, an act of vengeance on the Qing dynasty. 

In 1645, Crown Prince Sohyeon returned to Joseon alone, in order to succeed Injo to the throne and to help Injo to govern the nation. However, he often came into conflict with Injo, who disliked Sohyeon's open view of European culture and diplomatic views of the Qing dynasty. Soon he was found dead at the King's room, and buried quickly after a short funeral. Later, Injo also executed Sohyeon's wife who tried to find out the real reason for her husband's death. Legends say that Injo killed his own son with an ink slab that the Crown Prince brought from China.

Rather than selecting Crown Prince Sohyeon's oldest son, Prince Suk Chul, as the next royal successor, Injo selected Grand Prince Bong Rim and gave him the title of Crown Prince. When King Injo died in 1649, Hyojong inherited the throne, becoming the 17th monarch of Joseon.

During his reign, many books about farming were published to promote agriculture, which had been devastated during the Seven Year War . Hyojong also continued Gwanghaegun's reconstructions; he had a hard time restoring the economy at the same time as expanding the military. He also had to make more coins with metals which could have been used to make ammunitions, but had to give them up in order to rebuild his kingdom. He had too much stress dealing with numerous problems inside and outside of the country, and died at the early age of 40 in 1659. Although his plan for northern conquest was never put in action, many people regard him as a brilliant and brave ruler who dedicated his life to serving his nation.

How to find this cache:

At each marked waypoint, you will be given a task which will give you a number to use to find the final coordinates. 

Posted coordinates:

At the posted coordinates, you will find a sign near the park entrance. Find the find the last number of the year which ended the Manchu Invasion. Ａ

Waypoint １: 

At this waypoint, you will find a gate that symbolizes the entrance to the sacred site.  The number of spikes at the top of the gate, including the center trident spike is B

Waypoint ２:

At this waypoint you will find a sign describing the Royal kitchen area.  On the sign, find the last numbers of the year in which the building was restored. This will be C

Waypoint ３:

At this waypoint, you will be standing in front of the Ritual House.  Count how many pillars support the porch area (not the house itself) and this will be D

Waypoint ４:

At this waypoint, you will find a stele, or monument that explains where the tomb was origianlly located.  Count how many Chinese characters are on the front side (side with the door/sign) and this will be E

Waypoint ５:

At this waypoint, you will find a sign describing the Subokpang, or gravekeeper's quarters. Find the last number of the year in which the building was restored and this will be F

***the sign is missing TO FIND "F", YOU WILL NEED TO KNOW THE 4TH PRIME NUMBER...F =THE 4TH PRIME NUMBER***

Final coordinates are:

N 37 18.A(C-A)(E-F)

E 127 36.(B-4)(D-1)(F+1)

You can validate your puzzle solution with certitude.

And please show the utmost respect towards these graves. Signs written in Korean near the tombs do not merely say, "stay off the grass". They ask to show respect to the great king and queen. You may walk across the grass near the way points, but if you choose to go up to the tombs, please keep to the paths. Thank you and I hope you enjoy this cache!