The Torah in Parashas Masei tells us (Bamidbar 33:1):
Eileh Masei B'nei Yisrael - these are the journeys of the children of Yisrael
One of the journeys was from Sinai to Kivroth HaTaavah (v.16)
And they removed from the desert of Sinai, and pitched at Kivroth Hataavah.
On this posuk, Rabbi Tzvi Pesach Frank (Sefer Har Tzvi Al HaTorah, parashas Masei, p. 122) explains that the meaning of this is when a person "moves away from Har Sinai", e.g. from Torah study, he will fall victim to the earthly desires.
פסוק זה מרמז לנו דהמתרחק מהתורה שנתקבלה מסיני היכן תמצאהו בקברות התאוה כי אי אפשר לעצור בעד התאוה אלא בכח התורה בלי תורה נמסר האדם תחת יד כחות התאווה
The remedy for this is, as Rav Tzvi Pesach Frank explains, to strengthen Torah study.
I have found, however, a possible contradiction to this chiddush. The Satmar Rav, Rav Yoel Teitelbaum, in his Divrei Yoel (parashas Masei, p. 209) (left colomn) and elsewhere in parashas Naso (p. 141) explains that in all of these places that the Jewish people traveled to, spiritual rectifications needed to occur. The Satmar Rav quotes the sefer Zera Kodesh and says that through Torah study and mitzvos, they uplifted the holy sparks and these places would have the same kedusha as a Beis Midrash.
This seems to contradict the teaching of the Har Tzvi Frank, who explains that in one of these places, they were far off from Torah. They were fallen into the hands of earthly desires.
How to resolve this? Are there sources that explain that in all of these places, the Jewish people would study Torah? From the one source, it would seem that they have fallen prey to the earthly desires, and from that it can be concluded they weren't involved the way the Satmar Rav explains they were..