Anyone who spends a good 500 hours going through the available scientific data, scientist testimony, photographs, government/military documents, etc. regarding Mars will come to the conclusion that there was an advanced civilization there. Dating is all over the place; could have been as recent as 50,000 years ago or as long ago as a million (Earth) years.
But the consensus seems to be there was some combination of war and natural calamity that smashed its architectural structures and surface technologies to smithereens, bits and pieces of which you can still see in these rover photos like the one you posted. There are at least 50 good photos like this that are publicly available.
As Q says, and I'm paraphrasing, the truth is there for those with the maturity to want to know it.