It's a milestone for this year's edition of Mountwood Park's Volcano Days.
It's celebrating its 25th anniversary.
The event, held every year on the last weekend of September, is a celebration of the area's glory days in the petroleum industry, features antique steam engines and equipment.
It also has food and entertainment.
Organizers tell us it's grown over the years in both exhibits and attendance.
And this year's festival, which begins Friday afternoon, will feature a petting zoo for the first time.