2 Kings 17:10
And they set them up images and groves in every high hill, and under every green tree:
And they set them up images and groves in every high hill, and under every green tree. That is, statues and idols; for groves of trees could not be set under green trees; but they placed idols of stone, and of wood, as the latter were, in such places as Heathens were wont to do; see Jeremiah 3:6
See Gill on "1 Kings 14:23", so the Indians to this day have idols dispersed here and there in the fields, placed in little groves, or at the foot of some hill that casts a shadow {h}.
{h} Agreement of Customs between the East Indians and Jews, art. 5. p. 34.