We were on Gemini bridges yesterday and spotted a drone stuck on a short tower below. No one was on the hiking trail below trying to get it and it didn’t belong to anyone up above. We estimate the tower it was on to be maybe 80-100’. I didn’t get close enough to investigate cause the updraft from the bridges was too strong. I don’t know the normal etiquette of posting a “found” drone if you don’t physically have it but I wanted to put it out there in case someone lost it and didn’t see where it landed. It was spotted from the first bridge looking into the canyon. We didn’t have time or resources to go below and try to recover it.