Wi fi along the Gibb river road

Only each end

Telstra coverage map (click here)

Makes it easier if the correct definitions are used

http://www.cnet.com/au/how-to/home-networking-explained-part-4-wi-fi-vs-internet/

Wifi is from a device to your modem. Like a tablet to modem within a building.

Internet is "wireless" to a cellular tower as is how your phone communicates to the outside world

If you mean do any of the venues have wifi? Not that I know of, although El Questro might have it at the village shop.

Unless miracles have happened and i don't believe they have any 3G and 4G, satellite would be your only option, you can buy a second hand Sat phone or hire one or go with your own Satellite internet some units run a wifi hot spot like the Isat hub a guy has written a review of one here http://traveloutbackaustralia.com/isavi-wideye-isathub-inmarsat-review.html/
We have one but we use it for work found it to be ok. Used a Sat phone before that but that is limited when accessing the net.

OK, you can get it (data) on the hill with a lookout near Home Valley Station, over the other side of the GRR. It comes from Wyndham AFAIK.

If you want WiFi you will have to take your own 3g wireless modem or just a smart phone with 3G.

You can also get data if you sit outside the police station in Kulumburu, although the copper may come out and ask you what you are doing.

Drysdale River Station has a Telstra sat phone phone box , but no data.

Bell Gorge campground also has a Telstra sat phone phone box.

El Questro also has a sat phone phone box at the shop.

I bet the poster is a Y gen!

Regards Philip A

Margaret, I'm still not sure if you were referring to wifi literally as you might find in some caravan parks, or if you were talking about wireless internet for travelling as others have assumed and answered.

Have a look at this e-publication which comprehensively covers communications, for the low price of $9.97 much of which is being donated to the Royal Flying Doctor Service.
Staying in Touch on the Road.

Margaret, out of all the stations along the GRR, Home Valley offers internet facilities, but isn't cheap as you'd expect that way. You may also get Telstra service at the lookout not far from Home Valley's entrance. Other than that, that's pretty well it!