A group of individuals ascends an escalator at the Serdika Metro Station in Sofia, Bulgaria

A group of individuals ascends an escalator at the Serdika Metro Station in Sofia, Bulgaria. The viewpoint is from above and behind the lead subject. This individual, a male, wears a white hooded jacket, black trousers, and a black backpack, carrying a yellow plastic bag in his left hand. Directly in front, another male wears a brown jacket. Several other passengers are visible further up the escalator. The station environment features three parallel escalators, with passengers occupying the rightmost one. The right wall is constructed of polished light brown and grey marble or stone tiles, arranged in geometric patterns. Multiple framed advertisements, including one diamond-shaped, are mounted on this wall. Long, exposed fluorescent light fixtures illuminate the scene from the upper right wall. Above the escalators, a prominent rectangular bas-relief sculpture of a horseman (the Madara Rider) positioned over a fortress is carved into an orange-brown wall section. The ceiling and upper walls display visible white streaks and stains.