What is in this image? Describe it as if you were explaining it to someone from the 15th century.

Imagine a fantastical creature, akin to a dragon but drawn for the amusement of children, soaring in the skies above a dense forest of towering pine trees. The beast appears almost whimsical, equipped with a pair of grand spinning wings atop its head that whirl like the windmills you may see grinding grain in our villages. These spiraling appendages enable it to rise above the clouds, leaving the earth and trees far below. The creature has a robust, rounded body, and its mouth is wide open in what one might interpret as either a chortle or a fearsome display. In its grasp, it holds a large container, perhaps a barrel, secured as if it were a precious cargo it is tasked to transport through the heavens. Such a sight in a drawing may stir the imagination, blending the familiar natural world with the otherworldly and making one ponder the marvels and mysteries that could exist in distant realms or in the tales of storytellers who travel from land to land.