Mysterious location (God of War (2018))

When I first started the game, I came across this cobblestone in the location of "The Crossing", it had white runes (like it can be raised and passed under it), but as soon as I approached it, the game said - "go the game on" and did not let the action push. I went through the game, came back, and he was already in the vines (which can not be removed and before that they were not). Duck what was behind him and at what point did I have to go under it?