Did you know butterflies have 2 antennae??
To find this cache solve this puzzle
S 37 49. 2 butterflies, one butterfly, 2 and a half butterflies
E 145 12. a butterfly plus 2, 3 butterflies minus 1, one butterfly
A little playground near the Somers Trail bike track. If you walk a little further along the track there's another little playground as well!