Tapestry crochet is a technique that allows crafters to create intricate patterns and images using multiple colors of yarn. By working with two or more colors in a single row, the unused yarn is carried along the back of the work, creating a dense and colorful fabric. This method is often used to make items like bags, blankets, and decorative pieces. The technique is similar to intarsia knitting, but it is done with a crochet hook instead of knitting needles. Tapestry crochet can be used to create both simple designs and complex images, making it a versatile choice for many crochet enthusiasts.