What is the recommended size and weight requirement for boulder or rock horn anchors?

The recommended size and weight requirement for boulder or rock horn anchors is typically akin to the size of a large refrigerator. This is because effective anchors need to have sufficient mass and stability to withstand the forces exerted on them during a rescue operation. A large refrigerator-sized rock or boulder is substantial enough to provide the necessary security and resistance against pulling forces, which is crucial for maintaining safety during a rescue.

The choice of a large refrigerator implies that the anchor will not easily dislodge or shift, making it reliable for scenarios where the safety of the rescuers and the victim is paramount. Smaller items, like those around the size of a medium washing machine or a small desk, may not possess the requisite weight and stability needed for secure anchorage. Similarly, an anchor the size of a small car would be impractical in most scenarios, as the weight and bulk would make it difficult to utilize effectively in many rock rescue contexts. Hence, the recommended size ensures a balance between reliability and practical usability in various environments.