, ▁a ▁fragment ▁of ▁se ash ell ▁and ▁a ▁fragment ▁of ▁sn ail ▁shell , ▁various ▁pieces ▁of ▁animal ▁b one , ▁m ica ▁and ▁traces ▁of ▁red ▁p ig ment . ▁The ▁offering ▁was ▁covered ▁with ▁a ▁sl ab ▁of ▁stone . ▁The ▁cyl ind rical ▁vessel ▁was ▁decor ated ▁with ▁two ▁pan els , ▁each ▁containing ▁a ▁person age ▁we aring ▁a ▁he address ▁and ▁performing ▁aut os ac rifice . ▁ ▁Str ucture ▁B 1 - 1 ▁is ▁believed ▁to ▁have ▁developed ▁from ▁a ▁central ▁temple ▁and ▁platforms ▁on ▁each ▁side ▁in ▁the ▁cardinal ▁directions , ▁with ▁the ▁west ▁platforms ▁serving ▁as ▁the ▁main ▁approach . ▁As ▁the ▁complex ▁developed , ▁the ▁space ▁between ▁the ▁platforms ▁was ▁filled ▁to ▁form ▁the ▁Great ▁Platform , ▁the ▁earliest ▁version ▁of ▁which ▁measured ▁. ▁The ▁main ▁py ram id ▁B 1 - 1 ▁was ▁then ▁built ▁upon ▁the ▁Great ▁Platform , ▁behind ▁the ▁western ▁platform ▁and ▁covering ▁the ▁original ▁central ▁temple . ▁The ▁Great ▁Platform ▁was ▁rem od elled ▁at ▁least ▁three ▁times ▁before ▁it ▁reached ▁its ▁final ▁dimensions . ▁ ▁Temple ▁of ▁the ▁Column s ▁The ▁western ▁platform ▁of ▁Str ucture ▁B 1 - 1 ▁supports ▁a ▁super structure , ▁which ▁has ▁been ▁called ▁the ▁Temple ▁of ▁the ▁Column s . ▁Because ▁of ▁the ▁west ward ▁orientation ▁of ▁all ▁the ▁structures ▁at ▁T az um al , ▁the ▁Temple ▁of ▁the ▁Column s ▁standing ▁on ▁the ▁west ▁side ▁of ▁the ▁main ▁py ram id ▁may ▁have ▁served ▁as ▁its ▁main ▁fac ade