The following cannot be cracks on basalt columns in Iceland:
Photo shows what geologists call “cracks” (horizontal lines) on a “basalt” column in Svartifoss (Black Waterfall) in Iceland. The horizontal lines at center do not meet with the horizontal lines at far right, thus proving the horizontal lines are not cracks. They should be marks left by casting concrete from molds. This column was broken from Svartifoss in Iceland ( see Materials and Methods and image source–Fig. 4c in
http://www.hindawi.com/journals/jgr/2013/482067/ ). Geologists think the column formed between 200,000 and 100,000 years ago (note 1). Primitive people could not have built architecture that could have lasted so long. So, Svartifoss (Black Fall) falsifies the theory of evolution.