I find as the population grows , its harder to find them , plus,if dont need tech points you are just looking for that one.. then It may seem longer wait... I found them all without Exploration 3 and I can post proof.......
here is my hut with all 4 collectables, Mua was one of the 7 originals she is a a runner now age 59, note the tech points and the population






so Arthur What is level 3 Exploration for??? please answer??