The Trapdoor Spider is usually hiding in its burrow with a lid for better camouflage. Once a prey comes close it jumps out and drags it into the burrow. Their bites are not dangerous for humans, only local pain and swelling is to be expected.
Spider checking out his burrow
Spiders burrow without lid
Spiders burrow with lid
Burrow pictures are original (taken with my phone) and spider one is royalty free and taken from
ttps://upload.wikimedia.org/wikipedia/commons/3/3d/Trapdoor_SpiderQLD.jpg