The Martin Family disappeared in 1984 while collecting natural items to make Christmas decorations. What happened to them?

The Tromps (a family of 5) disappeared in 2016 but reappeared one by one.

https://www.kgw.com/article/news/local/martin-family-car-recovery-columbia-river-halt-1958-missing-investigation/283-ee01bb4b-28a4-45a9-8a3e-9626504bb1f7

https://www.martinmystery.com/updates-and-media

https://www.bbc.com/news/world-australia-37293494#:~:text=Image%20source%2C%20Victoria%20Police,signs%20of%20stress%20and%20paranoia.