All the guys: That can help me. Where may I reach SRTM2BGL? I suppose it's the latest version of Mattew's SRTM To BGL 1.03 program. Thanks a lot.Cheers Celso

Hi Celso:file name is srtm_to_bgl_104.zip and the Author is Matthew Styles.If your source data has many or big holes you might want to have a look at this thread: http://forums.avsim.net/dcboard.php?az=sho...g_id=1459&page=Good luck with your mesh design project!Cheers, Holger

Hi, Holger: You are gentle. Thanks a lot by the tricks.I wonder Matthew program was 103 version.Probably 104 is the latest. Did download BLACKART and it's fantastic forinterpolation. I'm using your method, 1000 Laplacian.Time is less than 1 minute in my machine, for each HGTfile. RegardsCelso