Mars was much more volcanically active early in its history than it is today.
NOT BSTOTAL BS
NOT BS — Verdict: True
Verified by Lenz ·
The Short Version
Evidence strongly supports a major decline in Martian volcanism over time. Early Mars built enormous volcanic provinces and experienced widespread, high-volume eruptions, while the best evidence for later activity is limited to smaller, localized, geologically recent flows. Recent volcanism does not overturn the basic comparison; it confirms Mars became much less active than in its early history.
Caveats
"Today" is not based on direct observation of present-day eruptions; it refers to the modern geological era, in which Mars appears largely dormant.
Mars may not be completely volcanically extinct: some studies indicate eruptions occurred in the geologically recent past, especially in Elysium Planitia.
The claim is comparative, not absolute; it does not mean all volcanism stopped, only that early Mars was far more active overall.