Mammoth Room
As the name alludes, the Mammoth Room is the largest space in the building measuring 120 feet by 55 feet for a total of 6600 square feet. The west end of the room features a grandiose fireplace that stands over 15 feet tall. Located adjacent to the kitchen, the Mammoth Room is an ideal locale for hosting a large group of guests. Three of the four walls in the room feature striking windows spanning nearly the height of the building. Built almost entirely out of local timber and rhyolite stone, the rustic atmosphere captivates guests of all kinds. The grand fireplace is operational and is the main source of heat in the Mammoth Room.
Maximum capacity of the Mammoth Room is 300 people.
Firehole Room
The Firehole Room is the smaller of the two rooms measuring 30 feet by 55 feet for a total of 1650 square feet. The east end of the room features a fireplace and a historic bar, which embraces access from both the Firehole and Mammoth Rooms. The bar area contains a double sink and a wine/beverage cooler. Glass doors on the north and south sides of the room are the main entrances to the building. The Firehole Room is ideal for a more intimate event, reception area or cocktail hour. Similar to the Mammoth Room, the rustic style features timber and rhyolite stone from around the West Yellowstone area. The fireplace can be used and is the only source of heat in the Firehole Room.
Maximum capacity of the Firehole Room is 100 people.
Ready Room
Renovated in 2025, the Ready Room offers a comfortable space to prepare for any event. The room includes dressing tables with mirrors and chairs, a full-length mirror, wardrobe rack, a sofa and table, and overstuffed chair.
Kitchen
Since the Dining Lodge originally served as a facility to feed visitors coming to Yellowstone National Park on the train, the building houses an industrial sized kitchen. Available to the renter are the following appliances:
2 Industrial Refrigerators
1 Industrial Freezer
3 Industrial Gas Grills and Ovens
2 Convection Ovens
1 Bread Warmer
1 Dish Sanitzer
1 Ice Maker (700 lb capacity)
Preparation counters
In the kitchen, we also have the following items available (inclusive with rental):
| Glasses | Number |
| Water Goblets | 186 |
| Wine Glasses | 264 |
| Coffee Cups | 300+ |
| Saucers | 300 |
| Barware | Assorted |
| Utensils | Number |
| Forks | 300+ |
| Spoons | 300+ |
| Butter Knives | 300+ |
| Dinner Plates | 300+ |
| Salad/Side Plates | 300+ |
Available with rental of the Dining Lodge are the following tables and chairs:
| Tables & Chairs | Number |
| Large Caberet (36" diameter) | 5 |
| Small Caberet (30" diameter) | 5 |
| 6' Round | 18 |
| 5' Round | 40 |
| 8' Rectangle | 15 |
| 6' Rectangle | 10 |
| 6' Rectangle - Adjustable Height | 6 |
| Serpentine | 4 |
| White Folding Contour Chair | 380 |