Puzzletober 2025: Arctic

The newcomer enters the downstairs restroom to see what it would be like if he didn't get a deluxe suite. The floor is the same style as the one in his bathroom, but it's significantly cleaner. To his left are three shower stalls and to his right are several toilet stalls; both use the same sliding lock mechanism to ensure privacy. Along the back wall is a set of sinks, one of which has an open window above it.

The sun had set a couple hours ago. Arctic air pervades the room. Considering that some residents may be showering here later, he walks up to the window and closes it. When he looks down at the sink below the window, he finds that a blocked mass of water had frozen into ice in its bowl.

Rules: Draw a directional loop within the circular grid, which may cross itself. The loop may only make a 90-degree turn if it collides with an edge wall, and otherwise must either move in an arc around the center or along a diameter. The circumference of the grid is not considered walls.