Balsamroot wildflowers bloom below the Teton Mountains in Grand Teton National Park, Wyoming, USA

A grand view. Grand Teton National Park, USA

These arrowleaf balsamroot wildflowers, also known as Oregon sunflowers, have a grand view of the Grand Tetons, a towering mountain range in the US state of Wyoming. The region’s harsh weather means that only the hardiest of wildflowers can survive, and these bright yellow arrowheads fit the bill. The plants tolerate drought, winter weather and trampling, as well as being fire resistant with roots which regenerate leaves and flowers, after the top has burned.

Located just 10 miles from Yellowstone National Park, Grand Teton National Park and the surrounding national forests constitute the roughly 18-million-acre (28,000-square-mile) Greater Yellowstone Ecosystem, which still has the same plants and animals that it had before people arrived in North America. It’s one of the world's largest intact temperate ecosystems.

As well as boasting an impressive collection of wildlife, the park is a popular destination for mountaineering, hiking, fishing and camping, with over 200 miles of hiking trails.