Does anyone know if it is possible to global alias one directory for example..

http://www.domain.com/directory1/

To a new domain, under a new directory name like this..

http://www.domainabcdefgh.com/newdirectory/

Whilst still making sure all the content of the original /directory1/ are viewable / editable from the original directory itself and any subsequent directorys under the main /directory1/ ?

Regards,

Lee