Sediment. Stories of the Sixxth Dimension, #3

Nature does not care if you are sorry. On a suffocatingly stagnant July afternoon, four friends follow a dry creek bed into the shade of the deep woods. The transition is butter-smooth. There are no shimmering portals. There is only the rhythmic crunch of gravel and the easy banter of teenagers with nowhere to be. But when they pass the same bone-white sycamore tree and rusted RC Cola can for the third time, the "aimless afternoon" curdles into a nightmare.  The Loop is Sinking.
Leo, Maya, Sam, and Chloe are trapped in a spatial loop that is actively degrading. With every lap, the environmental fidelity drops: clear water turns to copper-smelling sludge, the sky flattens into an unrendered grey, and the woods grow unnervingly silent.  The Fog is Deleting the Past. A relentless grey wall follows at a walking pace. It doesn't just obscure the path behind them; it erases it.
To turn back is to cease to exist. Forced forward, the group begins to encounter the Sediment: the rotting corpses of their own past iterations who failed to break the cycle. Evolution is the Only Exit. The Creek is a metaphysical centrifuge, spinning the group until their hidden traumas and ego-defenses are forced to the surface. To escape, they must undergo a "Frequency Shift"-a total psychological reckoning with the anchors of their past.
In the Creek, you either face your truth and evolve, or you become a permanent fixture in the mud.