Kumanichi reports that there is now a free bus service for volunteers who wish to clean houses and clear debris in the flood areas of Ashikita (and perhaps elsewhere - the article doesn't make that clear). The bus departs from the Sakuramachi Bus Terminal every Tuesday and Thursday from July 28th to September 15th (except August 13th) apparently at 7:00 AM, though again, that is not explicitly stated, so you might want to check. - William
ボランティア、被災地へ 熊本市がバス運行開始 | 熊本日日新聞
熊本市は22日、豪雨で大きな被害を受けた人吉市や球磨村にボランティアを派遣する無料の貸し切りバスの運...