This page explains how to find the Tawa Jinn shrine.
How to Reach the Shrine
Go south from Hateno Tower through a valley between the mountains. Go east to Hanu Pond and kill the Hinox there. Take the orb, then look south to find a slope that goes up into the mountains. The slopes will take you up to three orange pedestals. Put the orb into the northeast pedestal. You can read the nearby sign to start the shrine quest.
Then go south to Uten Marsh to find a Blue Hinox. Kill it and take the orb north up the slopes to the three shrine pedestals, and put the orb into the south pedestal.
Then go west to Rabella Wetlands and kill the Black Hinox there. Take the orb east and put it into the final orange platform to reveal the shrine.
About the Shrine
The chest in the shrine contains a Great Thunderblade.