After the 1988–89 eruptions, a block-type sabo dam (a temporary erosion-control structure) was built in 1989 to hold back sediment and protect the downstream towns.
… （You can view the continuation after purchase.）
Blue Pond Tales: Where Mt. Tokachidake’s Story Begins Story 1
After the 1988–89 eruptions, a block-type sabo dam (a temporary erosion-control structure) was built in 1989 to hold back sediment and protect the downstream towns.
… （You can view the continuation after purchase.）