Mammoth Dunes at Sand Valley Golf Resort in Nekoosa, Wisconsin, is a stunning and expansive golf course designed by David McLay Kidd. This course is celebrated for its bold and dramatic layout, which makes the most of the resort’s unique glacially formed landscape, featuring vast sand dunes and wide fairways that provide a playful yet challenging round of golf.

Mammoth Dunes is a par-73 course, stretching over 6,800 yards from the back tees. The course stands out due to its significant width and scale, with fairways that can be up to 100 yards wide. This design encourages golfers to choose different angles and strategic approaches to each hole, making the course accessible to players of all skill levels while still challenging more experienced golfers.

The terrain at Mammoth Dunes features rolling topography with substantial elevation changes, large sandy waste areas, and undulating greens that are both inviting and deceptive. The use of the natural sand dunes creates dramatic vistas and offers a variety of shot options, particularly on approach shots where the ground contours play a pivotal role.

Signature holes include the 14th, a short par-4 that tempts golfers to drive the green from the tee but requires navigating a complex array of bunkers and dunes. Another highlight is the 6th hole, a long par-5 that traverses a ridge with stunning panoramic views, challenging golfers with strategic bunkering and a multi-tiered green.

Mammoth Dunes emphasizes a fun and engaging play style, with Kidd’s design philosophy focusing on wide playing corridors and playable bunkers that offer recovery options. This approachability does not diminish the course's challenge but rather makes it enjoyable for repeated play, where discovering new strategies and shot choices becomes part of the allure.

The aesthetic and playability of Mammoth Dunes are complemented by the course's sustainable approach to maintenance and land use, preserving the natural beauty and ecological health of the sand barrens environment.

The clubhouse at Mammoth Dunes, like the rest of Sand Valley Golf Resort, provides excellent amenities with a focus on comfort and relaxation. The facility is designed to enhance the natural surroundings, offering sweeping views of the course and a welcoming atmosphere for golfers to enjoy post-round dining and socializing.

Overall, Mammoth Dunes is a distinctive and memorable golfing experience that combines creative design, natural beauty, and a fun atmosphere, making it a must-play course for those visiting Sand Valley Golf Resort.