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Kirishima Kinkowan NP, Kagoshima
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In 1914, lava reached this shore within days, then advanced into the sea for about 2 weeks, building the coastline beneath the promenade. Seawater chilled it quickly, leaving cooling cracks and rounded lava fragments.
Groundwater seeps from the shore into brackish tidal pockets where the threatened white-fan fiddler crab (ハクセンシオマネキ) lives. Males wave an oversized claw like a tiny fan; the species is Vulnerable in Japan.
Volcanic rock here is more than scenery: Kagoshima's official tourism guide notes seaweed, including nori and wakame, and shellfish gathering along these rocks, plus year-round fishing for mejina and rockfish.
This promenade doubles as a haiku walk. Its stone monuments include Kaneko Tōta's striking image of black Sakurajima and a broken gunstock racing across the sea, as well as a poem by Takahama Toshio, son of haiku master Kyoshi.
Plants on this 1914 lava began with almost nothing: windblown lichens and mosses start building soil; grasses, ferns and pines follow, while birds later deliver seeds of woody shrubs.
Below the trail's coastline, the sea life changes with depth: Kagoshima Prefecture records stony corals in shallow water, soft corals around 10–20m, and whip corals farther down.
In a 2015–16 survey of the promenade's shore, researchers found Japanese chitons only in cracks in large upper-shore lava boulders—not on the sand or smaller stones. These 3–5cm mollusks are easy to miss.
At the promenade's starting point, neighboring Lava Nagisa Park has a footbath about 100m long, fed by natural hot spring water from 1,000m underground—an unexpectedly warm welcome to a walk across lava.
