Huh.

Surface changes observed on a Venusian volcano during the Magellan mission

In short, a volcano on Venus seemed to be active from 1990 to 1992. It could be that the mountain simply slumped, but more likely it that it blarped up some lava.

So if you decide to go for a hike on Venus, add “volcano” to the list of things to be careful of.

This would make Venus the third world in this solar system to have active volcanoes, after Earth and Io. But some form of geological activity is much more common, with ice geysers all over the place out among the larger moons.