As you drive through the eastern plains of Colorado, a faint line appears at the edge of your vision.

At first, you might think it's just low-hanging clouds, but as you get closer, you realize it is a massive mountain range.

It is the Rocky Mountains. The silhouette rising above the endless plains is striking, as if it has drawn a boundary line across the land.

The eastern region of Colorado features gentle plains, where the scenery hardly changes even after driving for dozens of kilometers.

The sky is vast, the wind is strong, and the road stretches straight ahead. Yet, when you look westward from the center, a gray ridge slowly reveals itself from a great distance where the sky meets the ground.

As it gradually turns a deep blue and becomes clearer, almost reaching the clouds, travelers often say,

"Now we have truly entered Colorado."

Denver and the Front Range area are located right at the boundary where the plains meet the mountains. Thus, Denver is a unique city where endless plains are visible to the east and snow-capped mountains to the west.

Driving along the highway at sunset, the red-tinted sunlight spreads along the ridges of the mountains, while the meadows and farmlands below glow golden. This contrast is the true charm of Colorado's landscape. As the mountains draw closer from the plains, the scenery begins to change gradually. First, the cornfields in the fields diminish, replaced by trees and rocks.

Small towns occasionally appear on either side of the road, with old gas stations and ranch signs visible.

In between, pinwheels spin slowly, and in the distance, snow-covered peaks seem to approach as if within reach. The scenery at this moment feels like a scene from a movie. Other than the sound of the wind, there is no other noise, and only the music from the radio fills the car.

When you crack the window open a bit, the cool breeze carries the smell of earth and dry grass.

At that moment, a strange emotion washes over you as the monotony of the plains intersects with the majesty of the mountains. Truck drivers who frequently travel this route can gauge the time by the visibility of the Rocky Mountains. The mountains serve as a reference point and direction for the people in this area.

Especially at sunset, the phenomenon known as 'Alpenglow,' where the mountains turn a fiery red, is distinctly visible from the plains. From a distance, it seems as if the entire mountain range is ablaze in red, but after a few minutes, it changes back to a calm purple hue. This change in light is even more dramatic for those viewing it from the plains.

The cities in the Front Range area, such as Denver, Longmont, and Loveland, have all grown against the backdrop of this mountain range. Therefore, residents look to the western sky every morning to guess the weather, and in the evening, they end their day by gazing at the sunset-lit mountains. This scenery is a daily occurrence unique to Colorado that is hard to find in other states.

For travelers, this experience is unforgettable. The scene of driving through the endlessly sprawling plains as the white mountains slowly approach feels like entering a massive painting.

The sky becomes increasingly blue, the air cools, and the heart finds peace. Here, nature reveals its presence without needing to speak. At the boundary where the plains of Colorado meet the Rocky Mountains, one truly feels the scale of the earth and the rhythm of nature with their whole being.