"Alright... This is where it gets a little weird... We're gonna have to crawl." She murmurs, coming out into a slightly open area, where she gets down on her hands and knees before starting to crawl into a tunnel that looks rather man-made. It was too round to be natural...
Of course, this has the added effect of pushing her ass out right into Zalia's face, letting her see her pink pussy and tight little asshole as she crawled forwards.