The following extract I read on Cryptomundo. What Lily saw was not a snake with a stripe. What she saw was a snake shedding its skin.
"In July 1995, the huntsman Krasnikov Andrew, his wife, Lily, and editor of “The President”, T. Karatsuba and sister were in the cave at the top of the Kara-Dag. At 2 am, coming up to the edge of the cliff, at the bottom of the sea, she saw something very large and white*. This unknown creature was stirring and writhing. Armed with binoculars, night vision, she looked at the blank space at the bottom. What she saw at the bottom, struck her. At the bottom it is well considered white snake with a black stripe on the back, the width of the body which was more than two meters. The length of the snake, which is constantly squirming, was more than 40 meters. Through binoculars was clearly visible on the body of each scale. She called his comrades.
Each in turn took the binoculars and saw the unknown creature at the bottom, like a snake. An hour later, having got used to the presence of a snake, they retired to a cave. From time to time, Tatiana came out to check on the spot whether snakes. He still squirmed, clearly performed a dance. Light, she stood and looked at the white snake, which was already visible to the naked eye, snakes, otsvechivaya pink, continued to squirm on the other side cliff. And then they realized that the two giant snake dance dance of love. Right snake was smaller left. They obviously perform a dance of love, the dance of procreation. Relict population means snakes will soon be added. At five in the morning, constantly looking guys went down."
"In July 1995, the huntsman Krasnikov Andrew, his wife, Lily, and editor of “The President”, T. Karatsuba and sister were in the cave at the top of the Kara-Dag. At 2 am, coming up to the edge of the cliff, at the bottom of the sea, she saw something very large and white*. This unknown creature was stirring and writhing. Armed with binoculars, night vision, she looked at the blank space at the bottom. What she saw at the bottom, struck her. At the bottom it is well considered white snake with a black stripe on the back, the width of the body which was more than two meters. The length of the snake, which is constantly squirming, was more than 40 meters. Through binoculars was clearly visible on the body of each scale. She called his comrades.
Each in turn took the binoculars and saw the unknown creature at the bottom, like a snake. An hour later, having got used to the presence of a snake, they retired to a cave. From time to time, Tatiana came out to check on the spot whether snakes. He still squirmed, clearly performed a dance. Light, she stood and looked at the white snake, which was already visible to the naked eye, snakes, otsvechivaya pink, continued to squirm on the other side cliff. And then they realized that the two giant snake dance dance of love. Right snake was smaller left. They obviously perform a dance of love, the dance of procreation. Relict population means snakes will soon be added. At five in the morning, constantly looking guys went down."
* - This statement shows that these creatures skin can turn an opaque white. As is illustrated in the Napo Amazon confluence to the left.