The Highlands Plateau Greenway will have its monthly work trip Dec. 14. Meet at 9 a.m. in the large parking lot at the Recreation Park for a brief orientation session. Participants will be furnished the necessary tools and safety equipment. Volunteers should bring water, rain gear and a day pack. Wearing clothes that can get dirty is advised. Participants are asked to register with Ran Shaffner by emailing email@example.com or leaving a message at 526-5622.