Map showing Koa`e fault system

Map showing Koa`e fault system (sinuous east-northeast-trending lines from unpublished map by Tina Neal and Jack Lockwood) and survey networks spanning it. Yellow dots, leveling benchmarks. Red triangles, EDM benchmarks; lines between EDM benchmarks are measured. Also shown are some cracks in southwest rift zone and around Kīlauea's caldera. Note that one leveling line and part of EDM network span southwest rift zone. All leveling lines are tied into summit leveling network (not shown).