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Close to the Timbavati River on the S39 I came across a single tree in a very well wooded area covered on one side (side pointing north and west) by a dense fibrous growth that reminded me of air plants I'd seen in USA except this "stuff" was very green.
What was quite strange is that no other tree was bedecked like this one. I've shown a photo here

This particular year there is a lot of this type of climbers growing in Kruger. It is a result of the good rains we had. I can't i.d. this particular species from this photo.

In the area just North of Afsaal picnic site, whole areas of bush is totally covered. It looks quite spooky early in the morning.

Ish putting me on the spot here Freda... and now i can't even claim 'rewards'

Rooks, do you have any other pics of this creeper? Very difficult to make an id from this photo.

2 possibilities i can think of is:

Lime-yellow pea (Macrotyloma axillare)
A trailing and twisting legume with hairy stems and bright green ovate leaflets 3 to 5 cm long and 3 cm wide, slightly pubescent but glossy. Flowers greenish yellow, 1.2 to 1.5 cm long (small like you mentioned), and it flowers over much of the growing season.

a wild guess but maybe some type of Dodder!?
Dodder parasitizes various kinds of wild and cultivated plants.
The flowers are numerous, white, pink or yellowish, small (2 to 4 mm long depending on species), and can be borne in tight balls or in a loose cluster (again depending on species). Flowers normally appear from early June to the end of the growing season.
One that comes to mind is Cassytha filiformis .

Sorry but unfortunately without close-ups i won't be able to give you an answer.

... sorry for late post. Notice how fine the tendrils are

No problem rooks, i was out of town for few days.

Ok this one is better and now i can confirm that it was my second guess.
This is Cassytha filiformis of the Lauraceae (avocado family). A holoparasite (superficially looking like dodder, which is Cuscutta of the Convolvulaceae; but not at all related).
This is an extraordinary example of convergent evolution in which a single genus in each family has developed a parasitic mode of life. Like most parasites, mistletoe and dodder can be harmful to the host plant they are growing on. This is especially true if they steal too much moisture and vital nutrients from their host.
Dodder can sometimes grow so thick that the host shrub is barely discernible.