今までに房総半島でたくさんの川廻し洞窟を見つけてきました。
気に入った洞窟はニックネームを付けています。
今日ご紹介する写真はその洞窟の一つです。
地下鉄の形に似ているため、サブウェイと名付けました。
I have discovered and photographed so many caves now that I have started naming them. This one I call The Subway. It is about 100 metres in length, and one half of it has walls that look like the inside of a subway tunnel. The other end of it has collapsed at some time. And construction has been done to stop it collapsing further. A large corrugated steel roof has been installed. Above it is someone's vegetable garden. 
 

Subway-Cave-in-Summer_5094-Rakkan-WSJ

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