Would you happen to know any reliable source or local knowledge regarding the name of this trail, "Lost Emerald Necklace"? Using Mapillary Street View, I was only able to locate this sign stating "Emerald Necklace". Thank you, and I hope to hear from you soon. 

https://www.mapillary.com/app/?lat=42.345113333333&lng=-71.094526333333&z=17&pKey=508293190193581&focus=photo&x=0.5958453623496869&y=0.608101733624655&zoom=1.3840988334910624