[kristopolous]

Teenagers and children seem to find everything. We may make some significant archeological discoveries with a couple cheap surveys.

[gambiting]

One of the largest caves in Poland was discovered by two teenagers playing in the forest(the English article on wikipedia is very poor,sadly)

https://en.wikipedia.org/wiki/Paradise_Cave

[jacobush]

Same story in Sweden ! https://en.m.wikipedia.org/wiki/Lummelunda_Cave