A jeep road (with access by permit only) extends to the end of the island.
In the spring, fields will be open for softball - by permit only.
Hunting by special permit is sometimes allowed to thin the herd.
Entry is by permit only, except on advertised open days.
Access is only by permit or with an approved commercial tour operator.
Access to the site is by permit only, usually as part of a tour.
Use of the land was by permit only, with the fees going to the Indians.
The four sites together could accommodate up to 2.8 million square feet of floor area by special permit under current zoning rules.
Cars were by permit only, and a Nervasport was more rare still.
There is ample parking at the station, but by local permit only.