g ast ' s ▁( 1 9 6 2 ) ▁typ ology ▁of ▁metal ▁artifact s ▁in ▁Mes o amer ica . ▁This ▁classification ▁is ▁based ▁on ▁the ▁division ▁of ▁objects ▁into ▁one ▁of ▁three ▁major ▁functional ▁categories : ▁util itar ian ▁objects , ▁objects ▁of ▁personal ▁ad orn ment , ▁and ▁cer emon ial ▁objects ▁ ▁D ating ▁of ▁these ▁metal ▁artifact s ▁is ▁based ▁primarily ▁on ▁their ▁association ▁with ▁sty list ically ▁di agnostic ▁cer am ic ▁forms . ▁( P ender g ast ▁ 1 9 6 2 : ▁ 5 2 1 ). ▁ ▁J agu ar ▁Temple , ▁M ask ▁Temple ▁and ▁High ▁Temple ▁ ▁At ▁the ▁site ▁are ▁structures ▁that ▁date ▁from ▁AD ▁ 6 2 5 : ▁The ▁J agu ar ▁Temple , ▁named ▁for ▁its ▁bo xy ▁j agu ar ▁decor ation ; ▁the ▁M ask ▁Temple , ▁ad orn ed ▁by ▁a ▁ 1 3 - foot ▁stone ▁mask ▁of ▁an ▁ancient ▁May a ▁king ; ▁and ▁the ▁High ▁Temple , ▁offering ▁visitors ▁a ▁pan or am ic ▁view ▁from ▁its ▁sum mit . ▁ ▁The ▁most ▁interesting ▁features ▁at ▁the ▁structure ▁are ▁two ▁mask s ▁that ▁decor ate ▁the ▁west ▁fac ade ▁of ▁the ▁temple . ▁The ▁mask s ▁are ▁on ▁two ▁levels ▁on ▁the ▁south ▁side ▁of ▁a ▁central ▁st air way , ▁on ▁the ▁lower ▁level ▁the ▁mask s ▁more ▁than ▁ 1 5 ▁feet ▁high . ▁It ▁represents ▁a ▁rather ▁human ized ▁face ▁and ▁is ▁border ed ▁by ▁decor ative