Exactly what it says. Think double decker bus, but with Lizardmen. From what I can tell, the poster of this beautiful beastie was Tia Avende Alantin over on Imgur/Reddit Awesome work, the creator also made a carnosaur-riding skink chief! Well done, amazing work!
But it still has to have gymnast level skills to balance such a high and heavy load. Awesome model though.