long been kept secret to help preserve them. >> the early we're not going to tell people. we're still not telling pem but for a long time that worked. >> breathe silver has agreed to lead me to the titans, acting superintendent for redwood national and state parks, home to some of the largest trees in the world. >> so this is not an official state park trail. >> no, this is one of the trails that visitors have created by searching for some of the trees and groves of titans. >> a few years ago someone posted the gps coordinates of the titans on social media. images like this lured thousands of tourists to the area in search of the secret grove, they crisscrossed the park creating unofficial trails known as social trails. >> and calling it the grove of the titans, secret grove, that just enhanced the hunt. >> yeah, it piqued people's interest. people got intrigued into the big tree hunt almost like trophy hunters. >> reporter: and like trophy hunters, people posed with the titans, sharing them online as