▁Alt un ▁Ha ▁lies ▁another ▁ 2 5   km ▁further ▁to ▁the ▁east . ▁The ▁material ▁culture ▁of ▁Ch au ▁Hi ix ▁shows ▁close ▁t ies ▁with ▁both ▁Lam ana i ▁and ▁Alt un ▁Ha , ▁as ▁well ▁as ▁evidence ▁of ▁interaction ▁with ▁cent ers ▁in ▁Pet én ▁Bas in . ▁ ▁There ▁are ▁considerable ▁ancient ▁ir rig ation ▁works ▁at ▁Ch au ▁Hi ix , ▁so ▁it ▁was ▁probably ▁an ▁agricult ural ▁community ▁supp lying ▁food ▁for ▁Lam ana i . ▁ ▁Ear liest ▁cultural ▁activity ▁at ▁Ch au ▁Hi ix ▁has ▁been ▁trac ed ▁to ▁the ▁early ▁Middle ▁Pre class ic ▁Sw ase y ▁phase ▁( ca ▁ 1 0 0 0 - 5 0 0 ▁BC ) ▁ ▁Co pper ▁artifact s ▁and ▁their ▁significance ▁at ▁Lam ana i ▁Among ▁the ▁many ▁important ▁aspects ▁of ▁Post class ic ▁and ▁early ▁Spanish ▁colonial ▁period ▁May a ▁life ▁at ▁Lam ana i ▁is ▁shown ▁by ▁the ▁presence ▁of ▁significant ▁numbers ▁of ▁co pper ▁artifact s . ▁Co pper ▁indicates ▁bro ader ▁trade ▁relations ▁in ▁the ▁southern ▁May a ▁low lands , ▁and ▁as ▁a ▁reflection ▁of ▁techn ological ▁change , ▁the ▁history ▁of ▁metal ▁artifact ▁use ▁at ▁Lam ana i ▁is ▁an ▁in valu able ▁element ▁in ▁the ▁reconst ruction ▁of ▁Post class ic ▁and ▁early ▁historical ▁dynamics . ▁The ▁arch ae ological ▁context s ▁of ▁co pper ▁objects ▁recovered ▁at ▁Lam ana i ▁beginning , ▁with ▁the ▁appearance ▁of ▁metal ▁at ▁the ▁site ▁by ▁around ▁A . D . ▁