Directory contents:

/North_America_3arcsec/ contains zipped files of all North America SRTM DEMs
above 15 deg north latitude, processed by the SRTM global processor and sampled
at 3 arcseconds

/South_America/ contains zipped files of all South America SRTM DEMs
below 15 deg north latitude, processed by the SRTM global processor and sampled
at 3 arcseconds

/Eurasia/ contains zipped files of all Eurasia SRTM DEMs, processed by the SRTM
global processor and sampled at 3 arcseconds

/Africa/ contains zipped files of all Africa SRTM DEMs, processed by the SRTM
global processor and sampled at 3 arcseconds

/Australia/ contains zipped files of all Australia SRTM DEMs, processed by the SRTM
global processor and sampled at 3 arcseconds

/Islands/ contains zipped files of various Island SRTM DEMs, processed by the SRTM
global processor and sampled at 3 arcseconds

Continent_def.gif shows the location of cells for each continent

/Unites_States_1arcsec/ contains zipped files of all Unites States SRTM DEMs,
processed by the SRTM global processor and sampled at 1 arcsecond. Tiles that
straddle the Canadian or Mexican border have the void value substituted for
territory outside the United States.

US_1_arcsec.gif shows the location of a arcsecond sampled cells for the U.S.