Separating from the structure, you loosen your muscles and rest for a moment. This thing is heavy. Walking slowly around to the head of the tomb, you try to see inside where you pulled it slightly open.
The inch or two's gap provides little useful information, but you think you can just see the dark shape of the body - perhaps mummified, perhaps not - inside. Practises of the native Sri Lankans for this time period suggest that they would have sealed the body in an airless container and allowed it to dry. This natural mummification leads to shrivelled, blackened skin pulled back over the bones.
But you cannot see inside, nor can you see any sign of the artefacts you would expect to find with the body. Looking through the gap suggests an idea to you though. If you were to stand above the lid at this end, you could brace your feet against it and push against the wall, rather than pulling.
If the lid suddenly shifted, of course, there would be a risk of falling inside, but you are not sure what physical state you will be in after dragging the stone slab any further.
Feeling slightly stronger for your short break, which plan will you adopt?
Zing - stand on the tomb and push with your boots
Zing - continue pulling from the handholds