The majority of the tourism occurs in the summer months .
Sullivan County has been a popular vacation spot since the 19th Century , with mountain climbing , boating , and other outdoor activities , and the Monticello Raceway being among the attractions .
The majority of the tourism occurs in the summer months .
Sullivan County has been a popular vacation spot since the 19th Century , with mountain climbing , boating , and other outdoor activities , and the Monticello Raceway being among the attractions .