Yes, they will. The weather on Mars can't do much to metal tubes. They probably won't be buried either (the area they're in doesn't get much net deposition, you

Yes, they will. The weather on Mars can't do much to metal tubes. They probably won't be buried either (the area they're in doesn't get much net deposition, you can tell from how rocky it is), but if that does happen, each sample's position and the terrain around them is very precisely mapped so it would be extremely unlikely that any get completely lost. https://mars.nasa.gov/news/9337/nasas-perseverance-rover-completes-mars-sample-depot/ https://mars.nasa.gov/news/9337/nasas-perseverance-rover-com...