A traffic jam formed last week in South Africa's Kruger National Park as safari-goers spotted Africa's largest bird of prey feasting on a huge lizard.

The tourists got unusually close to the rare martial eagle and were able to see clearly the bird digging its talons into the rock monitor.

"Mostly it’s the big cats such as lion and leopard that draw huge numbers of tourists to a sighting," said the filmer.

"No big cats on this day but everyone realized and appreciated the fact that we all were looking at Africa’s largest bird of prey standing on top its kill," he added.

Martial eagles are enormous birds which can weigh more than six kilos and have a wingspan of almost two metres.

The rock monitor is Africa's second largest lizard and can reach lengths of up to 1.5 metres.

On a recent self-drive safari in Kruger National Park, we came across a magnificent large eagle unexpectedly sitting on the ground next to the road. The huge bird was identified as a juvenile martial eagle. We managed to get unusually close to this otherwise shy raptor. We suddenly realized this great hunting eagle was standing on top of a huge lizard called a rock monitor. We were told the eagle hunted the giant lizard literally a few minutes before we arrived. The martial uses its massive talons to catch and kill prey. This one was crunching down on the lizard with its powerful talons. There was a slight movement from the lizard before it died and the eagle started feeding on it. The video shows how tough the skin of this monitor lizard is. The martial struggled with biting through the skin to open it up and get to the meat. In the end of the video the martial picks out the flesh of the one eye, clearly the easiest part to start with. While zoned in on this fascinating sighting we realized a lot traffic started to gather at the sighting. Vehicles in the front blocking the road and another six vehicles behind us. Mostly it’s the big cats such as lion and leopard that draw huge numbers of tourists to a sighting. No big cats on this day but everyone realized and appreciated the fact that we all were looking at Africa’s largest bird of prey standing on top its kill, the largest lizard in Africa and one of the biggest in the world, a rock monitor. It was incredible enough to eventually draw even a larger number of vehicles as word started spreading.