A relatively quick find, but please be sure to rehide it carefully so that it remains concealed and in play.
Delta has many meanings:
1. a triangle shaped piece of land where a river splits before flowing into the ocean.
2. the fourth letter of the Greek alphabet (shaped like a triangle)
3. one of my favorite songs by Crosby, Stills and Nash.
Jngpu sbe cbxrl guvatf. Bhgfvqr bs gur irtrgngvba pvepyr, haqre n ybt. Eruvqr pnershyyl cyrnfr!