Mill Mountain Zoo plans free Sunday Published December 19, 2014 | By Web Staff It’s a way to thank the community for their support. The Mill Mountain Zoo announced a “Renew the Zoo” campaign earlier this year, and on Sunday, the zoo is waiving admission fees from 1:00 to 5:00 p.m. to give back. Details from WFIR’s Kelsea Pieters: LinkedinGoogleTwitterFacebook