You should see the hills & Beaver Lake Campground from here! Custer City is the oldest city in the Southern Black hills. Custer City has been greeting guests for more then 125 years. If you choose Custer City & Beaver Lake Campground as a vacation destination, you will have picked an ideal headquarters for your southern Black Hills Adventure. The Custer area is host to several campgrounds in the area & all are waiting to serve you. Beaver Lake Campground is unique as it offers a full service campground with a 360 foot waterslide to boot! Beaver Lake Campground is located three miles west of Custer City on Hwy 16.