"I am going on a mission to feel ALL PIPES," I declared.
"Start with me!" Uberbob responded.
She already felt up the second junction pipes. Also, by "follow pipe to left", do you mean the one at the junction you just came from?
"Go to tower" needs some specific directions.

I knelt down to investigate the object to my left. It was a rock.
"Pick it up! Pick it up!" Uberbob called out over the shrieking wind.
"It's a rock!" I yelled back, "A heavy one. I don't want to carry a rock!"
"But it could be important!"
I glared darkly. "It's a rock. It doesn't even look like a good rock."