The gas station there is now closed, and it's not expected to open until at least the end of the year.
The National Park Service shutdown the station earlier this month -- because its contract with the operator expired.
Equipment at the station that doesn't meet state environmental standards must be replaced.
The next closest gas station to Yosemite's Arch Rock entrance is about twenty miles away.
A sign in Mariposa warns drivers about the closure.
The park is also making gas available to visitors in Yosemite Valley for emergency situations.