The SRTM tile is added to the
map canvas. If you zoom to the S25E018.hgt layer you can see that it
covers a much larger area. Also the projection is in Geographic
Coordinate System (GCS) with latitude/longitude coordinates in degrees
So we have to clip and reproject the DEM and add it to our GeoPackage.
1. In the Layers panel click right on S25E018.hgt and choose Export | Save As...