Mysterious 'Marsquakes' detected by Nasa's Insight lander in sign of volcanic activity

Nasa's InSight lander, bottom right, recorded two 'Marsquakes' on the Red Planet using its onboard seismometer, left, in an area known for its volcanic activity where landslides, top right, have been seen. https://www.dailymail.co.uk/news/article-9434007/Mysterious-Marsquakes-detected-Nasas-Insight-lander-sign-volcanic-activity.html?ns_mchannel=rss&ns_campaign=1490&ito=1490