The angle of the tusks are better view in the 3rd photo.
The model is 25mm scale and came with three skeletons for crew members. I found the quality of these pieces to be rather poor and decided to "man", the Mammoth and it's double howdah with 15mm figures by Black Raven. Two riders are located on the neck, with two figures in each half of the howdah. In addition there is a kneeing crossbowman, next to the command banner and a swordsman standing near the left foreleg of this undead behemoth. It was armed with a catapult which fit on it's back between the two halves of the howdah. I choose to disregard this weapon system, as I felt it did not add to the overall effect of the model. The howdah halves are decorated with large scale (compared to the 15mm crew) skulls and shields. These trophies can be explained to be ogres or giants that were vanquished by the Undead Legions.
The model when completed was unstable. I drilled a hole into it's body and mounted the model on a clear 60mm Game Workshop aerial base. The mammoth no longer falls over and I like the effect of the round base. I feel that this figure fits nicely into my large scale HOTT Undead Army. The actual base size for the behemoth under the HOTT rules should be 60mm x 60mm. The diameter of the base is 60mm so when positioned in combat I feel there shouldn't be any problem.