Ryusendo

yuuki @yuuki26

so on sep 25, i went to Ryūsendō Cave in Iwaizumi, Iwate. the street view below best describes the front of the entrance. maps.app.goo.gl/Tq3y1aQog28oaj…

yuuki @yuuki26

from the entrance to the first exhibition. the floor was wet. it was cold.¹ the passage was narrow. ¹ the inside was 16 c (61 f) while the outside was 19 c (66 f). pic.twitter.com/LeGlGSqeY3

yuuki @yuuki26

seems it was ~15c (59f) near the entrance n ~10c (50f) at the back.

yuuki @yuuki26

the first exhibition “the abyss of longevity.” pic.twitter.com/5MbiHKNyrd

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yuuki @yuuki26

the second exhibit “the outline of ryusendo cave” and “bats of ryusendo cave.” pic.twitter.com/PhxYHx1Tk4

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yuuki @yuuki26

there was a point where a lot of water was coming out js for the record (tama hibiki [gem sounding] falls) pic.twitter.com/pFbOCgYTXG

yuuki @yuuki26

so ryusendo was full of exhibits with no scientific explanation, like this “cave venus.” pic.twitter.com/AtH1Oc9L86

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yuuki @yuuki26

seems most ppl visit to see such blue lakes. pic.twitter.com/CwtTgcRwWH

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yuuki @yuuki26

at the end, there was a way back up the stairs to the entrance. do not take video while climbing stairs pic.twitter.com/aewMXx6rmh

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yuuki @yuuki26

on the other side of the roadway was the Ryūsen New Cave Science Museum, where photography was prohibited. this was another cave, more academic. maps.app.goo.gl/iqKCJSqWvxi4GL…

yuuki @yuuki26

the sign at the entrance said no photography but i js found a review that said they were told photography was allowed

yuuki @yuuki26

conclusion: speleology is hard. i still havent figured out what a limestone cave is. it could be commercial caves arent interesting.