Zion National Park will appear on a U.S. postage stamp for only the second time in its 100-year history, though the image isn't among the park's most recognizable.

The stamp, which features a sandstone formation in the slickrock area of the park, will be unveiled Sunday at an event in the Zion Canyon visitor center, just inside the park's south entrance.

The new stamp depicts one of the lesser-known areas of Zion, east of its historic tunnel near the Checkerboard Mesa.

"It's not an iconic image of Zion," but it does show a slickrock formation and is relevant to the park, Zions spokesman Ron Terrysaid.

The new 79-cent stamp is good for mailing postcards and letters weighing up to one ounce to Mexico, and may also be used domestically. Text on the stamp reads "Zion National Park, Utah."