Favorite less-traveled spot: The North Rim, which has a higher elevation and is more heavily forested than other areas in the park. It is only 10 miles as the crow flies from the South Rim. Pearce says it takes up to five hours to drive there because the road runs along the rim's twists and turns.
"If you want to experience a national park kind of like they were decades ago -- the feeling of slower pace, quieter, fewer people -- the North Rim is the place to go."
Favorite spot to view wildlife: The grassy areas near the train depot in the village and Hopi Point. Pearce says elk and deer gravitate toward the train depot's grassy areas and endangered scavenger birds, including the California condor, nest and socialize near Hopi Point.
Never feed the animals in the park, especially squirrels, which bite between five and 10 guests every day during the summer, he says.
"We want to keep the 'wild' in wildlife," he says.
Most magical moment in the park: Cross-country skiing under a full moon to the South Rim of the canyon in 2004. The experience was so peaceful, Pearce says, he has made it an annual tradition.
"It'll be quiet, really chilly," he says. "The air will be still. The moon sparkles on the snow and the canyon has a moonlit glow coming from it. It makes some of the cliff walls appear to glow."
Oddest moment at the park: Seeing a man walk backward down into the canyon on the South Kaibab Trail in 2009.
"I found out later he was trying to break some record for walking backwards," he says. "Of course I had to step to the side and watch him go by."
A ranger's request: Come to the Grand Canyon informed and prepared. Pearce stresses that the park is a unique geographic setting, significantly cooler than the rest of Arizona.
When it comes to hiking down into the canyon, Pearce says to keep in mind that the temperature increases as you descend and that walking back up takes more time than going down.
"The elevation is the factor," he says. "People get in trouble because they do not realize it will be much more of a workout coming up."
Another park he'd like to visit: Great Sand Dunes National Park and Preserve in Colorado. The dunes are the tallest in North America and seasonal Medano Creek offers guests the chance to relax and rinse off after playing in the sand.
"You've got 40 square miles of sand that provide endless entertainment for kids," he says.