I visited several National Parks out west last summer and at least half of the tourists were European.
At home, I spend a lot of time in national forests and recreation areas and although they are about 10% of the population around here, I would say half of the visitors are of Mexican or Central American descent.
Are you in California, Arizona or Texas?
Fair numbers of Chinese and/or Koreans at the National Forest Campground I was at a few weeks ago, too.