ones , ▁a ▁burn ed ▁sk ull cap , ▁a ▁few ▁milk ▁teeth , ▁a ▁sh ark ’ s ▁to oth , ▁and ▁st ing ray ▁sp ines — all ▁found ▁in ▁the ▁bas alt ▁tomb ▁[ Str ucture ▁A - 2 ]. ” ▁ ▁Of fer ings ▁of ▁j ade ▁cel ts ▁and ▁figures ▁seem ▁to ▁be ▁common place ▁and ▁were ▁likely ▁concentr ated ▁in ▁bur ial s ▁( though ▁this ▁cannot ▁be ▁confirmed ▁because ▁there ▁are ▁no ▁human ▁remains ▁still ▁present ). ▁Art ifact s , ▁such ▁as ▁j ade ▁ear sp ools , ▁be ads , ▁p end ants , ▁sp angles , ▁pla ques , ▁and ▁other ▁j ew el ry , ▁were ▁found ▁in ▁plenty ▁at ▁bur ial ▁sites ; ▁however ▁it ▁is ▁difficult ▁to ▁tell ▁if ▁they ▁were ▁worn ▁or ▁placed ▁in ▁the ▁grave ▁as ▁bur ial ▁goods . ▁ ▁Str ucture ▁A - 2 ▁Str ucture ▁A - 2 ▁( M ound ▁A ) ▁is ▁an ▁ear then ▁platform ▁thought ▁to ▁be ▁a ▁bur ial ▁site ▁( a ▁“ fun er ary ▁chamber ” ). ▁Inside ▁the ▁platform , ▁research ers ▁discovered ▁badly ▁preserved ▁b ones ▁covered ▁in ▁a ▁red ▁p ig ment , ▁c inn ab ar , ▁a ▁subst ance ▁used ▁in ▁similar ▁Mes o amer ican ▁cult ures ▁to ▁denote ▁status . ▁Also ▁found ▁were ▁j ade ▁artifact s , ▁figur ines ▁and ▁mask s , ▁as ▁well ▁as ▁pol ished ▁obs id ian ▁mirror s . ▁Mir ror s ▁are ▁also ▁sus