<a href="//commons.wikimedia.org/wiki/Category:Ahaggar_Mountains" title="Category:Ahaggar Mountains">The Ahaggar, also known as the Hoggar</a>, a volcanic mountain range in the central Sahara.
<p>The image is averaged from 34 <a href="//commons.wikimedia.org/wiki/Category:Landsat_8" title="Category:Landsat 8">Landsat 8</a>-scenes, provided by <a href="//commons.wikimedia.org/wiki/NASA" title="NASA">NASA</a>. Input data are surface reflectance values calculated by <a href="//commons.wikimedia.org/wiki/Category:United_States_Geological_Survey" title="Category:United States Geological Survey">USGS</a>. Bands 4, 3 and 2 were combined into an RGB image. Co-registration, weighted averaging, and rescaling to extrema of the scenes was done in R with the package <a rel="nofollow" class="external text" href="https://bleutner.github.io/RStoolbox/">RStoolbox</a>. JPEG-encoded with <a rel="nofollow" class="external text" href="https://github.com/google/guetzli">Guetzli</a>.
</p><p>Images acquired in the range 16 June 2013 – 7 December 2018, each at mean 10:04, range 10:03–10:06. The sun position range: azimuth 85°–155°, average 124°; elevation 39°–69°, average 56°.
</p><p>resolution: 30m.
</p><p>projection UTM 31 N, WGS84.
</p><p>Center: 769590, 2574870; south-west corner: 710655, 2515935; south-east corner: 828525, 2515935; north-west corner: 710655, 2633805; north-east corner: 828525, 2633805.
</p>
From WRS-2 Path 192 Row 044.
<a href="//commons.wikimedia.org/wiki/User:Linus_Wolf" title="User:Linus Wolf">Linus Wolf</a>
NASA, USGS, <span class="int-own-work" lang="en">Own work</span>