Apparently, the website is down. However, the dataset (which is hosted on amazon aws) is still available:
Runninig
$ aws s3 ls s3://spacenet-dataset/Hosted-Datasets/MVS_dataset/
shows
PRE Challenge_Data_and_Software/
PRE JHUAPL_Example_Algorithm/
PRE Lidar/
PRE Publication/
PRE Spectral_Calibration_Software/
PRE WV3/
2019-08-14 22:29:09 103893 Screen Shot 2017-10-20 at 11.04.06 AM.png
2019-08-14 22:39:37 1102 license.txt
2019-08-14 22:39:37 518 readme.txt
2019-08-14 22:39:37 169 test.txt
The data you are looking for is inside the WV3/ folder.
Apparently, the website is down. However, the dataset (which is hosted on amazon aws) is still available: Runninig
$ aws s3 ls s3://spacenet-dataset/Hosted-Datasets/MVS_dataset/
showsThe data you are looking for is inside the
WV3/
folder.See also this link