The state known for its mountainous terrain and national parks, including Denali, is Alaska.

Alaska is renowned for its breathtaking mountainous landscapes and vast wilderness areas, making it a prime destination for nature lovers and outdoor enthusiasts. Denali, the highest peak in North America, is located in Denali National Park and is a major draw for visitors seeking mountaineering adventures and stunning scenery. Alaska is home to several other national parks, such as Wrangell-St. Elias and Glacier Bay, offering opportunities for hiking, wildlife viewing, and exploring glaciers. With its untouched beauty and rugged terrain, Alaska is a top choice for adventure and exploration.