My Layout is

www.domain.com/svnroot or www.domain.com/svnroot/
www.domain.com/svnroot/project1/trunk */branches */tags
www.domain.com/svnroot/project2/trunk */branches */tags

My Problem is Collection of Repositories doesn't show up..

Code:
LoadModule dav_svn_module     modules/mod_dav_svn.so
LoadModule authz_svn_module   modules/mod_authz_svn.so

/etc/httpd/conf.d/subversion.conf
<Location /svnroot>
	DAV svn
	SVNParentPath /var/www/svnroot
	SVNListParentPath On
    AuthType Basic
    AuthName "SVN Repositories"
    AuthUserFile /etc/svnauth
	AuthzSVNAccessFile /etc/svnacl
	Require valid-user
</Location>
/etc/svnacl
Code:
[groups]
admin = user1,user2
dev = user3

[project1:/]
* = r
@admin = rw
@dev = rw

[project2:/]
@admin = rw
@dev = rw

why is it doesn't work?