Road Trip: New Mexico

While visiting the Aztec ruins in New Mexico, we found some strange symbols on the walls.
What could they possibly mean?

◊◈◉◃◥   ▲◉■◉▣◉◓▩  ▣◈◥  ▨●▣◥◒  ◍▱◉◓■   ◉◓   ◓◥ ◊   ◬◥▬◉◒◕,   ◊◥   ◠◕▱◓◤   ■◕◬◥   ■▣◍▨◓▩◥   ■▿◬◎◕◃■   ◕◓   ▣◈◥   ◊▨◃◃■.
◊◈▨▣   ◒◕▱◃◤   ▣◈◥▿   ◙◕■■◉◎◃▿   ◬◥▨◓?

 

◃◥▣▣◥◍   ◕◠    ▣◈◥   ▨◃◙◈▨◎◥▣   ◎◥▣◊◥◥◓   ■   ▨◓◤   ▱.