This is Israel's highest mountain and is home to country's sole ski resort. Part of the mountain is in Israel (i.e., the part of the Golan Heights annexed by Israel) and the rest in Lebanon and Syria. Since Israel is officially at war with those countries, it is not possible to approach, much less cross the border.
There is snow for only part of the year, so check ahead to see if you can come ski. At other times, you can still visit and enjoy the views, the wildflowers, and so on at a much cheaper price.