Dune 45

Dune 45 is a star. It glistens in the Namib son — bright orange — sand saturated with rust and pulverized garnets.

Climbers atop Dune 45 in Namibia. In the lower left, a tree casts a shadow.
Dune 45

It is so well known that my camera recorded the location simply as “Dune 45.” Located at the 45th kilometer mark on the road connecting Sesreim and Sossusvlei, it’s a popular site for climbers in the morning before the sand becomes too hot.

Eight climbers climb Dune 45 in bright sun.
Climbers battle sun and hot sand to climb Dune 45.

It is also a star in shape, formed by winds from three directions. It grows highest at its center — 80 or 170 meters, depending on who you ask — and from there three arms spiral out. Sand blows in from the coast, the Kalahari Desert, and the Orange River. Geologists estimate that it’s 5 million years old.

Climbers approach the center of the top of the ridge.
Climbers approach the center of the top of the ridge.

By day people leave footprints on its spine and sides, climbing to its top, smiling for selfies, and then trudging (or sandsurfing!) back down. They pour the remains of metal and precious stones out of their shoes, drink water, and rest in whatever shade they can find. Then they leave the dune to the insects, snakes, birds, and wind.

Hikes rest at the base of the dune.
A hiker rests at the base of the dune.

Night breezes will restore its natural beauty.

Sand ripples on the side of the dune.
Sand ripples on the side of the dune.

We’re here for a blip of time. We climb, smile, and drive away. It’s a big day for us. The dunes just smile and wait for tomorrow.

Branches from a dead tree in the foreground frame the hikers atop Dune 45.
Climbers on Dune 45
A lone hiker atop Dune 45
A lone hiker atop Dune 45
Dune 45 in the distance, bright on the left, dark on the right, with a tree to the far left foreground. There are many footprints on the ground between the tree and the base of the dune. People are climbing the dune. It's a sunny day.
Dune 45
I am sitting in the shade of a tree. Behind me, vehicles in the parking lot.
I found the only shade available and jotted down my thoughts.

The !Nara Shrub, Namib Desert

The exterior of the !Nara melon is so unappealing that its scientific name includes an editorial comment: acanthosicyos horridus.

Five green and one ripe, open !nara melons on the shrub and resting on the sand of the desert.
!Nara melons. Photo courtesy of travelnewsnamibia.com

But the !Nara shrub – the ! indicates a clicking sound in the Nama language – and the melon it produces are essential to the Namib Desert. It’s called a keystone species, one whose influence on the ecosystem is so important that its absence might cause collapse.

Fossils suggest that the plant is more than 1000 years old, enough time to adapt to desert conditions. It has thorns but no leaves, protecting it from the desert sun. Its branches may grow 15 feet tall to adjust to the desert’s shifting sands, and it provides food for many desert inhabitants: beetles, gemsbok, ostriches, and the Nama people. Ostrich grass and Bushman grass, sheltered by the shrub, sometimes grow on the same mound. Botanically it’s related to the cucumber, and reports suggest that it tastes like an avocado or like a cross between a cucumber and a pineapple. The seeds are edible, and the fruit can be dried and stored for several years.

!Nara melons and shrub in the desert.
!Nara shrub and melons. Photo courtesy of TravelNewsNamibia.com

Ironically, the !Nara shrub is not considered a true desert plant. It can survive years without rain because it grows only where its very long tap roots – as long as 150 feet – can find a water channel underground.

Our guides showed us two true desert plants. The first, the dollar bush, is a succulent with a delicate white bloom. When the wind shifts, the dollar bush is quickly covered over by sand.

A dollar plant grows in the desert.
The dollar plant is a succulent with delicate white flowers.
The tips of the dollar plant are visible above desert sand.
This dollar plant is being covered over by desert sand.

The second is the pencil bush. It, too, has a white flower. It’s sturdier than the dollar bush and provides food and shelter for desert animals like the horned adder or namaqua chameleon. Shifting sand will kill it, though.

If the !Nara shrub is covered with sand, its branches will grow longer, keeping the plant alive, providing more food and shelter to other species. Because its roots run deep, it can survive the challenge.

In the foreground on the left, a pencil shrub. On the right, a !nara shrub. Other shrubs and a dune are in the background.
In the foreground on the left, a pencil shrub. On the right, a !nara shrub.

People of faith may see a metaphor in this. God provides what we need as we try to bear fruit in the wilderness. It’s up to us to develop roots that stay connected, though.

!Nara shrub and dune
!Nara shrub and dune, photo courtesy of media.ellerstrand.se

Homes

Our homes reflect our needs and customs, what’s available and what we want. The same is true for animals.

Weaver bird nest opening from the bottom, hanging in a tree
Botswana: weaver bird nest

In Botswana the weaver bird builds a nest that hangs suspended from a tree limb and opens from the bottom. This protects against the sun, helps conserve heat on cold nights, and shields the young from predatory birds.

Botswana: a giraffe stands in tall grass in front of an acacia tree that holds 2 large sociable weaver nest structures.
Botswana: sociable weaver birds construct group nests.

Its cousin the sociable weaver bird collaborates on a nest over generations, establishing a site that can hold as many as 100 chambers. Each chamber can hold 3 or 4 birds, which helps hold in heat on bitter winter nights. Other birds use the chambers when they’re empty. The complex nests are huge and heavy. Eventually they will break the branch, potentially killing the tree. The birds fly away and start a new site.

Earth from space, light cloud cover over Africa, the Arabian peninsula, and southern Asia
Earth from space, photo courtesy of NASA

If a weaver bird loses its nest, it can build a new home. But if we destroy our nest, we can’t build another planet. We need to make sure this one doesn’t break under the weight of our use.