Aug. 6 (UPI) -- A Minnesota hiker has been missing for more than a week in Big Horn National Forest in Wyoming.

Grant Gardner, 38, had planned on a three-day hike, "through the Misty Moon Lake area, eventually summiting Cloud Peak," the highest mountain in Big Horn, the sheriff's office said in a statement.

Gardner texted his wife July 29 that he had reached the summit of Cloud Peak but that the hike was "more taxing than he expected." But she hasn't heard from him since.

Grant Gardner's brother, Justin Gardner, has been in Wyoming helping with the search. He said his brother is an avid outdoorsman who is a loving husband and father of two.

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