Fall in Island Park brings crisp, frosty mornings followed by warm, sunny days. The elk begin to bugle and the brown trout start to spawn. Fall also brings the first light dustings of snow in the high country, and with the cottonwood and aspen turning colors, there is no better time to visit the cabin whether you are a hunter, fisherman or just an autumn enthusiast.


For many trout anglers, fall is their favorite time to fly fish. The crowds are gone, many hatches continue late into the fall and the brown trout are spawning, aggressive and easier to catch on streamers.

Henry’s Fork of the Snake River & Harriman State Park
Henry’s Fork of the Snake River is known as one of the finest trout streams in the lower 48 states and offers some of the best dry fly fishing in the country. Grandma’s Cabin is just minutes from Henry’s Fork and Harriman State Park. Anglers can hire superior outfitting and guide services right in Last Chance. Guides are skilled in challenging the experienced angler or providing lessons to beginner fly-fishermen and women.

Few rivers can match the Henry’s Fork. It has a wide variety of water temperatures and insect hatches from stoneflies, mayflies, caddis and damselflies that provide a feast of bugs for the fish. Trout Unlimited has voted the Henry’s Fork the number one trout stream in the country.

The area tributaries of the Henry’s Fork provide unnumbered miles of streams and creeks providing scenery, solitude and excellent fishing for any angler. If you are looking for a guided fly fishing trip or just a great fly shop in the area, we recommend Henry’s Fork Anglers or the TroutHunter, which are both right here in Last Chance.

Don’t forget the Upper Henry’s Fork or “Box Canyon,” the Middle Henry’s Fork and the Madison River have fishing year-round. Come prepared to snowmobile or snowshoe in for possibly the best fly fishing experience of your life.

Henry’s Lake & Island Park Reservoir

Don’t miss Henry’s Lake, one of Idaho’s great high mountain lakes, which provides the kind of fishing (and size of fish) anglers dream about. Anglers fish for cutthroat, brook and cut-bow hybrid trout in what is considered one of the finest trout fisheries in the West. These fish are prized by Henry’s Lake anglers because of their superior fighting qualities.

You may also want to include Island Park Reservoir in your fishing to-do list, which is formed by the Island Park Dam. Recreation on this 11-square mile, 7,000-acre reservoir is administered by the Targhee National Forest. Fishing season is year-round for rainbow trout, cutthroat trout, coho salmon, yellow perch, and bluegill. Other recreational activities on the reservoir include boating, kayaking, canoeing and other water sports.

Our neighbors in Montana also offer world-class trout fishing with the Gallatin and Madison rivers within an hour of the cabin. Hebgen Lake also provides great fishing just over the border in Montana.

Fishing Yellowstone National Park
If fishing Yellowstone National Park is your dream, the Firehole and Gibbon Rivers are calling your name less than an hour away from the cabin. A special Yellowstone Fishing Permit is needed to fish in the park.


With thousands of acres of public land all around (70% of Idaho is public!) and thriving populations of wildlife, Grandma’s Cabin is an ideal base camp for big game hunting. In addition to spectacular hunting for elk, deer, antelope and other big game, we also have great hunting for waterfowl and upland game birds.

Island Park is located in Idaho Hunting Region 6. For detailed information on seasons, regulations and permits, visit the Idaho Fish & Game website.


Autumn is a special time of year to be in the high country. September and early October weather is typically dry and sunny, few people are on the trails and even the sunlight seems a little bit more golden this time of year.

Hiking around Island Park offers endless possibilities with a wide variety of trails ranging from easy to difficult, including great options right in the Targhee National Forest and Yellowstone National Park. Visitor’s to Grandma’s Cabin can pick a trail from the wide variety of books and maps in our personal library.