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

The image features two individuals engaged in an activity that would likely befuddle the understanding of a 15th-century observer. They are donned in attire that accentuates their limbs'' movements—a man and a woman, both with content expressions. The man stands upright on a long, flat board that seems to glide over the ground; this board has small wheels attached for movement. The woman, supported by the man, extends dramatically forward, one arm and leg stretched out before her, the other leg bent gracefully back, her posture mimicking flight.The peculiar act takes place in an environment divided into squares, probably a large hall or court, bathed in light, suggesting either an outdoor setting or a well-lit indoor arena.Ropes tethered to unseen points above support the duo, allowing the woman to ''fly'' forward without touching the ground. This arrangement hints at a display designed for captivation and skill, a spectacle of balance and movement, much like acrobatics or a dance of daring. To one unfamiliar with modern wheels and harness systems, this sight could well seem magical or a clever trick of engineering.