Mathew 5:8
God blesses those whose hearts are pure, for they will see God.

Tell Dan is the traditional northern end of the Kingdom of Israel thru the time of David and Solomon.  It is located at the base of Mount Hermon and it's springs are some of the strongest in the area, and one of the major sources for the Jordan river.  During the Divided Kingdom, it was one of the locations of the altars and golden calves built by King Jeroboam.
Bible Land Studies
Providing a Hebraic and Historical Prospective of the Bible

Tell Dan - Iron Age City Gate
Lessons From the Olive Tree
By Kathryn S Patterson
Biblical Archaeology and History - Articles