In 1854 he went to Mariposa County, attracted thither by the wonderful accounts of the gold discoveries, and the marvelous stories he had heard of the grandeur and beauty of the Yosemite Valley and the surrounding mountains.
Upon his first arrival in Mariposa, he engaged in mining, and was also employed to assist in surveying Government land on the west side of the San Joaquin Valley, and canals for mining purposes, some of which passed through the celebrated "Mariposa Grant," the subject of prolonged and bitter litigation, both in this country and in Europe.

He probably knows more about the actual facts concerning the Mariposa Grant than any one now living, and it is to be hoped that some day he may overcome his natural repugnance to notoriety, and give to the public the benefit of his knowledge.
In the year 1855 Mr.Clark made his first trip into the Yosemite Valley with a party made up in Mariposa and Bear Valley.
Returning to Mariposa, he resumed his old occupation of surveying and mining, and, whilst so engaged, by reason of exposure, had a serious attack of lung trouble, resulting in severe hemorrhages which threatened to end his life.
He then removed, in April, 1857, to the South Fork of the Merced River, and built a log cabin in one of the most beautiful of our mountain valleys, on the spot where Wawona now stands.

He soon recovered his health entirely, and, though constantly exposed to the winter storms and snows, has never had a recurrence of his malady.
Wawona is twenty-six miles from Yosemite, and at that time became known as Clark's Station, being on the trail leading from Mariposa to the Valley, and a noted stopping place for travelers.
This trail, as well as one from Coulterville, was completed to the Valley in 1857, and the trip to Yosemite then involved a stage ride of ninety-two miles, and a journey of sixty miles more on horseback.

In 1874 and 1875 the three present stage roads were constructed through to the Valley.
All travelers by the Raymond route will remember Wawona and the surroundings; the peaceful valley, the swift-flowing Merced, and the surrounding peaks and mountains, almost equaling in grandeur the famous Yosemite itself.
In the early days this locality was annually visited by several bands of Indians from the Chowchilla and Fresno rivers.

The Indian name for the place was Pal-lah'-chun.