וַיִּקְרָ֛א אֶת־שֵֽׁם־הַמָּק֥וֹם הַה֖וּא קִבְר֣וֹת הַֽתַּאֲוָ֑ה כִּי־שָׁם֙ קָֽבְר֔וּ אֶת־הָעָ֖ם הַמִּתְאַוִּֽים׃
And the name of that place was called Kibroth-hattaavah, because there they buried the people that lusted.
Read kabbalistic (mystical) interpretation of Numbers 11:34: and classical mystical sources.