Events at The Den Find out about the events and activities happening at The Den. May 31 Siblings Young Rangers Day at Orford Ness 9:45 pm - 3:45 pm Explore, learn and discover at Orford Ness! Book now June 07 Dream Night at Colchester Zoo 6:00 pm - 9:30 pm Go wild at an exclusive evening at Colchester Zoo! Book now Sign up to receive our monthly Family Corner e-bulletin! Sign up