It's fair to say that Yellowstone National Park is, most certainly, a crowd-pleaser. And for good reason - the awe-inspiring scenery, charismatic wildlife and bubbling, spurting geysers are three of the most commonly photographed aspects of the park.
However - most will only see the park when the sun's shining and the shorts and flip-flops are out. For a truly unique experience of this well-known wilderness, why not visit Yellowstone in winter?
All images by Iain Shiels
The 3,500-sq.-mile wilderness of Yellowstone is impressive at any time of year - but in winter, the temperatures of both the snow the park's geothermic activity combine to create a whole different landscape.
In winter, you'll discover scenes akin to your favourite fantasy television shows within the park's boundaries.
Even at this time of year, the bison of Yellowstone can still be found wandering the roads and trails.
The famous Grand Prismatic Spring looks rather different to how it's usually pictured, but still a captivating sight.
It's not just bison that roam in Yellowstone - deer and elk are also common sightings around the park all year round.
In fact, wildlife sightings are perhaps even more likely and regular in winter - with less tourists to scare them away, the animals of the park become bolder in their scavenging.
A real highlight of visiting Yellowstone National Park in winter is that you'll avoid the crowds that flock to the destination during the summer months - experiencing a side of the park that few will see.
Although the normal hiking trails may not be navigable in the snow, there are plenty of other fantastic seasonal ways to explore - snowshoeing and cross-country skiing are both firmly on the agenda for a winter visit to Yellowstone!
Yellowstone in winter truly is a sight to behold (and capture on camera!). It's an experience that you'll remember for many years to come - and will completely refresh your perspective on what winter travel is all about!