One step below a burm?

[mainbutter]

Scrub (amethystine) pythons get about 15ft too, but have a thinner build. Some have been known to get much larger than 15 feet. (up to 28 feet, I read )

Kinghorni, the really big scrub species, are extremely rare in captivity, bar-necks which are more common are quite smaller than kinghornis.