Some of them are well hidden. I have found around 18 in my local area.Some I have looked for several times and still no luck at locating them but I will never give up looking. It is a great hobby and I enjoy it. I have several trinkets to put back in for the next one. I sent a flag tag with a piece of st Augustine beach rock attached. It made it over seas and back to California but has yet to come back home. Good luck on your next hunt.