what does "channmas" mean?

Do you mean where is it?  The one in Haiti?  It's on Port-au-Prince, and if you have not been to Haiti in a long time, you will not recognize it... even if you're standing in it.
Chanmas lontan an pa Chanmas jodi a.
Haitian Creole ↔ English Reference, Look up Haitian Creole and English Words