A couple years ago I floated down a tropical river in Bolivia. http://www.rolia.net/lf/list.php?p=1692
I was the only guest, with a local guide. There was no photo of myself except some selfies.
After 5 days on the river I arrived at the destination town. In the hostel I met another traveller who recognized me. He was by the river the day before. He said, "you were the solo guy on the raft on the river! I saw you and took a picture of you!" I was so glad and left him my email address, asking him to send me the photo when he got a chance.
It's almost two years. I haven't received the photo. Probably he had been very busy and forgot about it. I would be very excited if one day I get the photo.
With such experience, I'm pretty sure those friends will be very happy to see your photo, especially such a beautiful one!