View kolab-Calendar on a public Website?

[Paul]

Hi all,

is ther a possibility to view an kolab-calendar on a public website (e.g. 
based on wordpress and the ICS Calendar-Plugin).

Condition would be for instance the groupDav or calDav protokol, like it works 
on citadel. But in horde I found only the internal url - it shows a specific 
calendar in the horde web interface.
any ideas?

background ist the plan to implement a public event-calendar which is based on 
several kolab-calendars from some organisations.

cheers paul