PHOENIX (AP) - A woman who was swept down a backcountry creek in Grand Canyon National Park along with her stepgrandson is an experienced hiker and married to a founder of a popular outdoor footwear company, family members said Monday.
Authorities were searching for Jackson Standefer, 14, and Lou-Ann Merrell, 62, wife of Randy Merrell, who helped found the Merrell Boot Co. in 1981. The pair lost their footing Saturday and fell into the water during a family trip with Randy Merrell and the boy's mother in a remote area of the Arizona park.
The other two alerted officials by setting off an emergency GPS locator beacon below the canyon's North Rim, said Chief Ranger Matt Vandzura of the National Park Service. He didn't identify the hikers.
Mark McOmie, Jackson's uncle, told the Associated Press the Merrells were avid hikers and knew the area well.
Lou-Ann Merrell is "a very experienced backpacker," McOmie said. "If they can get to a spot where they cannot be in the water and stay warm, she's got the skills needed to get them through it. The odds aren't great. But given their skills and knowledge of the area, that will probably lead to the best possible outcome."
McOmie said searchers have found both their backpacks and their belongings inside, which the family has interpreted with mixed feelings. On the one hand, he said, it looks as if they were able to get their backpacks off.
"The bad part is that they don't have their gear," McOmie said.
The McCallie School in Chattanooga, Tennessee, said Jackson was an eighth-grade student at the all-boys school.
The park service said it's too early in the investigation to determine what went wrong. No rain or flash flooding was reported in the area, but it was not known whether the water level was higher than usual in Tapeats Creek, a tributary of the Colorado River that runs through the Arizona landmark.
Creeks in the canyon often see higher water levels in the spring as snow melts, Vandzura said.
The park service describes conditions in the area on its website, warning that melting snow or heavy rain may make crossing the creek impossible.
It also said hikers can use a "sketchy, seldom-used trail" that lets them walk around the creek when the water is high, but that the path should be used only as a last resort.
The group was on a different path known as Tapeats Trail, authorities said.