This from the Roscoe Holcomb version:

Hills Of Mexico

When I was in Old Fort Worth in 18 and 83
Some old Mexican cowboy come stepping up to me
Said I'll hire you, young fella, how would you love to go
And to spend the season working in those hills of Mexico

Well having no employment back to him I did say
'Tis according to your wages, according to your pay
Said I'll pay you good wages, on a steamboat you will go
And you'll spend the season working in those hills of Mexico

Well, they sent along that old steamboat and back to home did go
How those bells started ringing, the whistles they did blow
Going back to friends and loves ones and I'll tell them not to go
To that God-forsaken country in those hills of Mexico.

I was surprised to find that this great cowboy song was not in the DT (or did I miss it?). It bears some similarities to Buffalo Skinners and is also known as Mexican Cowboy. There are a lot of fine versions out there by Bruce Molsky, Ricky Skaggs, Elizabeth LaPrelle, Willie Watson, Riley Baugus and others but my absolute favorite is a longer version by The Renegades with Carol Elizabeth Jones on vocals.