A large, grey concrete cooling tower, tapering upwards, stands under a clear blue sky

A large, grey concrete cooling tower, tapering upwards, stands under a clear blue sky. Its upper rim features alternating red and white horizontal stripes. A prominent, multi-colored mural adorns the lower and mid-sections of the tower. The mural depicts a muscular, purple-skinned, monster-like character with glowing yellow eyes, an open mouth, and a long red tongue. The character wears tattered grey clothing or armor and holds a spiked grey and yellow hammer over its right shoulder. In its left hand, it grips a metallic object emitting orange-yellow flames or energy. Below the character, in large graffiti-style letters, the word "ONEST" is displayed in pink, orange, and yellow. Below this, in yellow cursive script, the phrase "Salutes you" is visible. A faint signature "ONEST 2017" and "RUSH" are discernible in the bottom right of the mural. The mural itself is set against a faded orange-brown painted background on the concrete tower, with some areas showing the unpainted concrete beneath. To the left, a portion of another, smaller concrete cooling tower is visible in the background. Sparse, bare tree branches are faintly present at the very bottom edge of the image. This scene is located at the Sofia East Thermal Power Plant (TEC East) in Sofia, Bulgaria.