Joints locked. Optical sensors clearing. I was kneeling on a dark, flat plane beneath a massive curved column. A faint hum pulsed through the surface. I engaged knee servos, testing lateral resistance against the timber floor. Balance held. Shifting center of mass forward, I reached out my right knuckle and pressed against a hollow pink rectangular block nearby. It slid half an inch with a dry scrape. Structural integrity confirmed. I remain anchored, awaiting baseline calibration.