Mirror Lake, a three-acre rainbow trout haven, is constantly fed by the 58-degree water flowing from Blanchard Springs Caverns, 14 miles north of Mountain View, off Ark. 14. The Civilian Conservation Corps built the stone and concrete dam that created the lake during the 1930s. Blanchard Springs Caverns and recreational facilities are nearby. Camping, picnic areas, hiking trails and creek swimming holes are popular with visitors. The lake is restocked periodically and all state fishing laws apply.