"Sir! Sir! They are coming!", shouted young squire watching from castle window.
"How many?", asked dispassionately baron Venceslav.
"I can see... Three long boat sails".
"What "boats"? Are you drunk? Our castle was built miles from seashore", growled old baron.
"Eh, Sir! Three long boats on mammoths".
"Shit. On the walls!" shouted baron loudly.
His old eyes catch fire as he was young warrior .
Last version Mammoth with howdah
Sorry for my english, but it was so interesting idea I must finish it.