Wind Caves that are in harmony with spring

In the Green Mountains, travelers discover a cave whose sound is known only when one visits the peaks.

When the snow melts, the water echoes on the rocks again, and the walls become like sweet melodies.

During the summer, the sound changes to a calm tone, as if the cave is breathing slowly under the heat of the sun.

In autumn, the sound mixes with the passing wind, and the sounds sound like a story told by nature.

Can the cave change the tone of its voice with each season?

One researcher is not sure why, but notes that the movement of air inside the cave changes with degrees the heat.

When the air rises in summer, the sound duct opens, and it is heard as if the cave is screaming.

In winter, the closure creates a low sound, similar to a whisper, that accompanies the extreme cold.

This phenomenon may make the cave serve as a natural theater that displays unexpected musical performances.