- Location: Keizer, OR
- League: Northwest League 1997-2019
- Affiliation: San Francisco Giants 1997-2019
- Ballpark: Volcanoes Stadium
On August 21, 2017, the Volcanoes scheduled a home game against the Hillsboro Hops for 9:35 a.m. that Monday morning. This was no mistake, as the game was scheduled to fall directly during the total solar eclipse passing over the Willamette Valley as part of its path over much of the United States that day. The ballpark was in the narrow band that would experience a couple of minutes of total darkness that day, and the game, dubbed the "Eclipse Game", was scheduled to take full advantage of this, with a built-in "eclipse delay" at approximately 10:17 am. The game was to be preceded with breakfast served to fans from 6 to 9 a.m. With all the associated merchandise linked to the game, it turned out to be the biggest promotion in team history.
Salem-Keizer was one of the cities to lose its affiliation in the minor league re-alignment after the 2020 season. Without a league to begin 2021, the team's ownership formed its own independent circuit, the Mavericks Independent Baseball League. In December 2021, the Volcanoes and three other dropped teams jointly filed a lawsuit against MLB. Two of the others, the Staten Island Yankees and the Tri-City ValleyCats, also have pending suits against their former parents; the Norwich Sea Unicorns are taking their first legal action. 
- Gary Horowitz: "Salem-Keizer Volcanoes ready for historic Eclipse Game", The Statesman Journal, Salem, OR, August 15, 2017.