After merging two SRTM TIFF files all I get is a black rectangle.
Merged raster has zeros next to both black and white squares under layer name.
I have no clue what I am doing wrong. Any suggestions?
I downloaded 2 tiles from here: https://dds.cr.usgs.gov/srtm/version2_1/SRTM3/Islands/
Tiles: S44E170 and S44E171