Well, they both attract a huge number of visitors. Yellowstone attracts around two million visitors every year. Approximately half of these arrive in July! The Cairngorms receive around 1.4 million visitors spread more throughout the year. So they are both busy, major national attractions.
The Cairngorms are about half the size of Yellowstone at 452,800 hectares.
The Cairngorm plateau in winter.
Yellowstone consists of various volcanic features such as the Yellowstone Caldera. This supervolcano is located in northwest Wyoming and is 40 miles across. In case you are wondering a supervolcano ejects over 1000 cubic kilometers of material when it erupts! The earth’s crust is thin in Yellowstone, hence so many geothermal features. One of the most famous being, Old Faithful, a spectacular geyser. The Cairngorms makeup is different. It is home to the greatest area of montane habitat in the UK. This includes some of the best glacial landforms outside of Arctic Canada.
They are both reservoirs for important species and have large areas of habitat. The Cairngorms has 25% of the threatened species in the UK. This area also has the largest areas of native Pinewood in Scotland. Yellowstone has the most intact ecosystem in the lower United States. Within the park roam a full suite of apex predators such as Wolves, Grizzly Bears and Bobcat.