Surface area: About 9 million sq km
Sand dunes (ergs): Cover 25-30% of Sahara
Dune height: Commonly 100-200 m, max recorded ~600 m
Temperature range: 40-50°C daytime, near 0°C at night in winter
Countries: 11 (Morocco, Algeria, Tunisia, Libya, Egypt, Sudan, Mauritania, Mali, Niger, Chad, W. Sahara)
Named ergs: Grand Erg Oriental, Grand Erg Occidental, Erg Chech, Erg Iguidi
Educational approximation - schematic teaching cues, not survey topography.
This 3D explorer is a procedurally generated visualization showing a representative sand-dune landscape of the Sahara Desert. All figures are rounded to commonly cited values.
Sahara Desert 3D Explorer
Welcome to the Sahara Desert 3D Explorer. The Sahara is the world's largest hot desert, spanning approximately 9 million square kilometers across 11 countries in North Africa - from Morocco and Western Sahara in the west to Egypt and Sudan in the east. Sand dunes, called ergs, cover about 25-30% of the Sahara; the rest consists of rocky plateaus, salt flats, and gravel plains.
The vast dune seas are characterized by towering sand formations that commonly reach 100-200 meters in height, with the tallest recorded dunes reaching approximately 600 meters. Daytime temperatures typically range from 40-50°C during summer months, but plummet to near freezing at night during winter - the extreme daily temperature swing is one of the Sahara's defining environmental features.
The Sahara has been a crossroads of human civilization for thousands of years. Historic trans-Saharan caravan routes connected sub-Saharan Africa with the Mediterranean basin, carrying trade in salt, gold, and other goods. Today, sparse nomadic and settled populations inhabit oases and margin regions, adapted to one of Earth's most extreme environments.
Use the toggles above to explore temperature gradients across the dune landscape and to see markers representing the historic caravan scale. Compare the Sahara to other deserts on the places-3d hub.
| Related places to explore |
|---|
| Atacama Desert - Earth's driest place |
| Huacachina Oasis - A desert oasis sanctuary |
| ← Back to Places 3D Hub |
Last reviewed: 2026-07-31. Authored by Claude. All figures are commonly cited values or published estimates.
Frequently Asked Questions
What percentage of the Sahara is actually sand dunes?
Sand dunes, called ergs in Arabic, cover approximately 25-30% of the Sahara. The rest consists of rocky plateaus, gravel plains, and other terrain types. Despite its reputation as an endless sea of sand, the Sahara's actual dune coverage is smaller than many people expect.
How tall can Sahara sand dunes get?
Most Saharan sand dunes range from 100 to 200 meters in height. The tallest recorded dunes reach approximately 600 meters. The height of dunes depends on wind patterns, sand supply, and the surrounding terrain.
How hot does the Sahara get?
Daytime temperatures in the Sahara commonly reach 40-50°C during summer months. However, the Sahara experiences extreme diurnal temperature variation - nights can drop to near freezing, especially in winter. This thermal swing is one of the harshest environmental stresses.
How many countries border or contain the Sahara?
The Sahara spans 11 countries: Morocco, Algeria, Tunisia, Libya, Egypt, Sudan, Mauritania, Mali, Niger, Chad, and Western Sahara. The desert extends from the Atlantic Ocean in the west to the Red Sea in the east.
What was the historical importance of the Sahara?
The Sahara has been a crucial crossroads in human history. Trans-Saharan caravan routes connected sub-Saharan Africa with the Mediterranean for centuries, trading in salt, gold, ivory, and other goods. Oases along these routes became vital trading posts and cultural centers.