D44

... as this megalithic grave from 3000bc is called. You can find what remains of it in Westenesch. Most of D44 has been broken up to pave roads and build seawalls. You can even find boreholes intended to fill up with explosives to demolish it! Luckily this practice was discontinued a 150 years ago, but not before the majority of these 5000year old graves were reduced to rubble.