Secrets of lost empires. Obelisk [videorecording] / written, produced and directed by Michael Barnes ; a NOVA production by the WGBH/Boston Science Unit and BBC-TV.
South Burlington, VT : WGBH Video, c1997.
1 videocassette (60 min.) : sd., col. ; 1/2 in.
Egyptologist Mark Lehner, stonemason Roger Hopkins and a team of Egyptian workers come together to figure out how Egypt's massive obelisks were erected.