Answer: Any cave is a very confined space, a threat to human life. It is the restriction of air, movement, maybe the unknown.
In the Torah, a cave represents the property of reception and the property of bestowal, Malchut and Bina, which a person specifically creates in himself by his correction. And even when he is in the property of Malchut (reception), he finds himself existing in the upper world, in the property of bestowal. Therefore, it is a blessing for him.
Question: But this is the opposite of our natural property of reception. Maybe because of this, a person is afraid of caves?
Answer: If we are talking about an ordinary person, then, of course, yes. But if we are talking about people who strive to rise from the property of reception, called our world, to the property of bestowal, called the upper world, then in our world, even if a person finds a state where he can temporarily stay in the property of bestowal in a limited space and time, this is a great success and a great discovery for him.
From KabTV’s “Spiritual States” 4/23/21