HARDYSTON-The Sussex County YMCA will hold an open house from 2 to 4 p.m. on May 15 for parents and children interested in Blue Mountain Day Camp. The Open House will be held at Fairview Lake Camps, 1035 Fairview Lake Rd., Stillwater. Attendees will tour the facilities and meet with camp staff. Blue Mountain Day Camp, for children in preschool through 8th grade, offers swimming, horseback riding, archery, sailing, canoeing, nature programs, tennis, arts and crafts, drama, fishing, street hockey, a rock climbing tower, photography, soccer, basketball, volleyball, dance, family evenings, theme days, and overnights. For more information, call the Sussex County YMCA at 973-209-9622 or visit www.sussexcountyymca.com.