Nahuatl is one of the large ones, and was spoken throughout the Aztec Empire in central Mexico.
I've heard Maya being spoken on numerous occassions when I was in the Yucutan and Quintana Roo. It was completely incomprehenisble to me, and I felt it was a very strange language. Often times when words appear with a double vowel like the Maya word, "Chaac", both the vowels are stressed, so that the word is elongated. "Chaac" would be pronounced (ch - a - a - k). I was suprised to learn that many Maya whom I encountered did not speak Spanish, or at least did not speak it well. I was forced to use a lot of pointing and sound effects in an attempt to communicate with them, lol.
I've heard Maya being spoken on numerous occassions when I was in the Yucutan and Quintana Roo. It was completely incomprehenisble to me, and I felt it was a very strange language. Often times when words appear with a double vowel like the Maya word, "Chaac", both the vowels are stressed, so that the word is elongated. "Chaac" would be pronounced (ch - a - a - k). I was suprised to learn that many Maya whom I encountered did not speak Spanish, or at least did not speak it well. I was forced to use a lot of pointing and sound effects in an attempt to communicate with them, lol.