Lakeside Relaxation and Fun at Hogback Lake in Angola, Indiana Get away from your worries and stress and return to a simpler way of life when you visit our campground in Angola, Indiana. We are excited to announce Circle B RV Park and Cabins at Hogback Lake is now Angola/Hogback Lake KOA Holiday. Our peaceful campground is a lakeside retreat and fishing oasis for those looking to escape the hustle and bustle of city living and breathe some pure, country air.