On the occasion when this picture was taken, we were visiting the Addo National Park, staying at Gorah Elephant Camp, one of the luxury camps found within the park, and were on an afternoon safari. We came across these lions a few hundred meters from the camp. They were on their way to the camp to overnight with two other lionesses and the big dominant male.

If an epic experience means going beyond what is usual or ordinary – to encompass that which is extraordinary, momentous and great – then that is how I would describe my first descent on the creeking Mac-Mac River, beginning from the thunderous Mac-Mac Falls, a national monument of South Africa.

The rhinoceros is critically endangered! Approximately 200 years ago, at the turn of the 19th century, there were an estimated one million rhinos. By 1970, the count was about 70,000. Today, there are fewer than 24,000 remaining in the wild. If there is no change in our appreciation of this magnificent animal – if we do not take action to stop poaching and support the protection of our rhinos – the five surviving species (white rhino, black rhino, Indian rhino, Sumatran rhino and Javan rhino) will become extinct in the wild in our lifetime.

Some adventure travellers like to distinguish between ‘soft’ and ‘hard’ experiences. Hard adventure tours are a little more extreme and often involve a heightened sense of risk and danger, with adrenaline as a necessary and obviously exciting part of the ride. Here is our pick of five tours guaranteed to give you your fix. Travellers beware – adrenaline is known to be highly addictive!