Titus 2:11 For the grace of God that bringeth salvation hath appeared to all men.
Romans 1:19-20 Because that which may be known of God is manifest in them; for God hath showed it unto them. 20 For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:
Psalm 19:1 The heavens declare the glory of God; and the firmament showeth his handywork.
Psalm 97:6 The heavens declare his righteousness, and all the people see his glory.
Romans 10:17-18 So then faith cometh by hearing, and hearing by the word of God. 18 But I say, Have they not heard? Yes verily, their sound went into all the earth, and their words unto the ends of the world.
So even in the deepest, darkest jungle, God makes himself known.