Hot stones up to a foot and a half in diameter fell more than a mile from the summit crater.
Residents near the volcano in Kagoshima prefecture were warned of further eruptions and falling debris, but no damage or injuries were reported.
The Japan Meteorological Agency said Sakurajima’s latest eruptions were the most forceful since 2009.
Scientists say the mountain has continued to erupt for the past two years, but activity suddenly turned violent on March 12, hurling hot debris a great distance.
Photo: Ministry of of Land, Infrastructure and Transport