Carrie slid face downward across a smooth floor until the top of her head encountered a wall, bringing her to an abrupt halt. "Owww!" She pulled herself into a sitting position and rubbed her nose and head while she blinked and looked about.
She could remember Rogue barking, Toodles yowling and a glowing green mist that sucked her into a cupboard and... She looked around again. The creamy white ceramic floor she had slid along rose seamlessly into walls and a ceiling, as though she were inside a roofed coffee cup. Behind her, the place she had entered through was now smooth and whole. She searched the area, running her fingertips over the surface. There was no sign of an entrance, and the green mist had completely disappeared. Stepping back, she peered left and right. The corridor was curved like a tunnel and led away on either side of her, lit by a soft glow which seemed to have no source.
Carrie smiled and nodded confidently. "I get it. This is a dream. I must have fallen asleep. Shouldn't have had that half bottle of wine after dinner." She shrugged. "Oh well, might as well follow it through." She pointed at the either end of the tunnel alternately, mouthing an old nursery rhyme, before settling on one and striding away.
Curved recesses that Carrie assumed were doors of some kind lined the tunnel walls, apparently randomly along the sides, floor, and ceiling. Bordering each recessed section were long lines of symbols, some black, some raised, and some flashing intermittently. Pressing on the recessed areas and the symbols caused no reaction, Carrie discovered. She frowned, wondering when she would wake up.
Walking farther, she found that new corridors opened in the tunnel walls, and she followed them randomly. They all seemed identical but for the symbols along the edges of the recesses. She examined them closely and found that no two sets of symbols were the same. The only factors linking them were their positioning in the corridors and their utter lack of any apparent meaning. There was nothing she remotely recognised. She began to take a dim view of her subconscious for coming up with this stuff.
As she wandered along, a nagging ache in her lower regions alerted her to another reason she needed to wake up. The after-dinner wine she had drunk had made its way through her body and was now asking to be released. Carrie stopped and closed her eyes before quickly opening them wide. "Damn. Why can't I wake up?" She began marching in small steps. "Come on, dream, be over." She increased her pace, hoping her dreaming mind would supply an exit.
She stopped. There it was, unmistakeable, the symbol to answer her prayers. Towards the top of a recess was a black circle above a triangle with a rectangle below. She had found the women's toilets. Her sleeping mind must have put the symbol there as a way to leave her dream.