https://calendar.google.com/calendar/ical/stgabriel.net_ke0j0guqj7fi7h6js54blnpgqk%40group.calendar.google.com/public/basic.ics
Get Feed for iCal (Google Calendar). This is for subscribing to the events in the Calendar.
Add this URL to either iCal (Mac) or Google Calendar, or any other calendar that supports iCal Feed.