Basaltic hyaloclastite (product of ancient submarine volcano), snow-decorated.
Basaltic hyaloclastite (product of ancient submarine volcano), snow-decorated. -- source link
#nature#geology#science#outcrop#volcano#volcanic rock#submarine#hyaloclastite#miocene#niigata#original photographers#玄武岩の水中破砕溶岩（1500万年前）#火山岩#中新世