The Dalles Area Chamber of Commerce CEO Lisa Farquharson recently attended a conference on how to make tourism destinations accessible to those with visible and non-visible disabilities.  Farquharson says those people can face a number of hurdles to traveling.  She says some of the things that can be done are simple for a business to do.  In an area where tourism is largely based on outdoor activities, Farquharson says things like better signage can be a big assist.  Farquharson notes those with disabilities make up 15 to 20 percent of the tourism market.