uly is all about the falls here at Brooks Falls. In the pre-salmon spawn days, this fall line acts like a speed bump, and delays the salmon’s arrival at its spawning ground. This bottleneck also happens to be the spot where the bears are at their highest concentration. This is an explosive time in Katmai National Park. The salmon leap over the falls with explosive vitality, the instinct to spawn. While the bears, waiting at the falls, are driven by their own instinct to make weight for the winter.