 Monument 23 is sculpted from andesite and falls in the middle of the size range for confirmed colossal heads . It stands 1 @.@ 84 metres ( 6 @.@ 0 ft ) high and measures 1 @.@ 2 metres ( 3 @.@ 9 ft ) wide by 1 @.@ 56 metres ( 5 @.@ 1 ft ) deep . Like the examples from the Olmec heartland , the monument features a flat back . Lee Parsons contests John Graham 's identification of Monument 23 as a re @-@ carved colossal head ; he views the side ornaments , identified by Graham as ears , as rather the scrolled eyes of an open @-@ jawed monster gazing upwards . Countering this , James Porter has claimed that the re @-@ carving of the face of a colossal head into a niche figure is clearly evident . 
 Monument 23 is sculpted from andesite and <a href='uninflect' title='1'><mark>falls</mark></a> in the middle of the size range for confirmed colossal heads . It <a href='uninflect' title='2'><mark>stands</mark></a> 1 @.@ 84 metres ( 6 @.@ 0 ft ) high and <a href='uninflect' title='3'><mark>measures</mark></a> 1 @.@ 2 metres ( 3 @.@ 9 ft ) wide by 1 @.@ 56 metres ( 5 @.@ 1 ft ) deep . Like the examples from the Olmec heartland , the monument <a href='uninflect' title='4'><mark>features</mark></a> a flat back . Lee Parsons <a href='uninflect' title='5'><mark>contests</mark></a> John Graham <a href='null_genetive' title='6'><mark>'s</mark></a>identification of Monument 23 as a re @-@ carved colossal head ; he <a href='uninflect' title='7'><mark>views</mark></a> the side ornaments , identified by Graham as ears , as rather the scrolled eyes of an open @-@ jawed monster gazing upwards . Countering this , James Porter <a href='been_done' title='8'><mark>has</mark></a> claimed that the re @-@ carving of the face of a colossal head into a niche figure is clearly evident . 
Monument 23 is sculpted from andesite and fall in the middle of the size range fa confirmed colossal heads . It stand 1 @.@ 84 metres ( 6 @.@ 0 ft ) high and measure 1 @.@ 2 metres ( 3 @.@ 9 ft ) wide by 1 @.@ 56 metres ( 5 @.@ 1 ft ) deep . Like da examples from tdaOlmec heartland , the monument feature a flat bck . Lee Parsons contest John Graham  identification of Monument 23 as a re @-@ carved colossal head ; he view thdaide ornaments , identified by Graham as ears , as rather thedarolled eyes of an open @-@ jawed monster gazing upwards . Countering this , James Porter done claimed dat the da@-@ carving of the face of a colossal head into a niche figure is clearly evident .