A husband and wife were scouting for fishing spots along the Lamar River in Yellowstone National Park when they interrupted a feeding grizzly bear. A grizzly bear feeding on a carcass. Photo: Courtesy ...

Nothing shatters the calm of a rafting trip quite like the sudden charge of an enraged grizzly. That unimaginable fear became reality for a group of rafters drifting along a scenic Alaskan river.

Imagine drifting along a wide, powerful river on a calm rafting trip, completely surrounded by untouched wilderness. The mountains rise around you, the trees sway in the breeze, and wildlife moves ...