another balanced thunderbird Letterbox Hybrid

A simple letterbox to add along this road of caches.  My friends and I only need a few more balanced thunderbirds to complete 2 challenges we signed 4 years ago.  maybe soon you see no more thunderbirds balanced or not.  hopefully we will find some other ones too.  I hid this on a cloudy day and hopefully the coords are right on but gave it 2 just in case.  not to many places to look.  There is a stamp and ink pad in the cache please do not remove them.