August 30th is the Buddhist memorial festival at Shikoku's 12th temple, Shousan-ji, which is one of the 88 temples on a pilgrimage..
Shosanji Temple (焼山寺), Also known as the Burning Mountain Temple is the 12th temple of the Shikoku pilgrimage.
To get there by public transport, catch a Yorii-naka bound bus from Tokushima station and ride till end of the line. From there change buses to one going to Shosanji, from the Shosanji bus stop it is about a 90 minute walk. Alternately, it's a beautiful hike from Temple eleven over well marked trails and with spectacular views (allow 4-6 hours).