Visitors by appointment only.
Travel on Hwy I-70 east out of Denver towards Limon, past the town of Watkins.
Take the next exit (#299) which is Manila Road. Go south (right) from exit for 1 mile.
Go east (left) on 6th Avenue approximately 2 miles.
Go south (right) onto Dutch Valley Road which is a short, DEAD END, gravel road. It is a right only turn.
Go to #66 on the left hand side. It is the 1st property with white vinyl fencing. Fence and gates have signs that say Longhopes.
Take driveway to Visitor Center.
CAUTION: Do not use Google Maps. It will will erroneously direct you to Harback Road.